From a0bca42a7ad98a37f4bdc4d7adc419471163edfb Mon Sep 17 00:00:00 2001
From: Wim <wim@42.be>
Date: Wed, 5 May 2021 22:03:28 +0200
Subject: Update vendor (#1461)

* Update vendored libs

* Fix slack api changes
---
 .../github.com/SevereCloud/vksdk/v2/.golangci.yml  |   8 +
 vendor/github.com/SevereCloud/vksdk/v2/doc.go      |   2 +-
 .../SevereCloud/vksdk/v2/events/objects.go         |  20 +-
 vendor/github.com/SevereCloud/vksdk/v2/go.mod      |   4 +-
 vendor/github.com/SevereCloud/vksdk/v2/go.sum      |   8 +-
 .../github.com/SevereCloud/vksdk/v2/object/ads.go  |   3 +-
 .../SevereCloud/vksdk/v2/object/messages.go        |   3 +-
 .../SevereCloud/vksdk/v2/object/newsfeed.go        |  10 +-
 .../github.com/SevereCloud/vksdk/v2/object/wall.go |   2 +-
 vendor/github.com/gomarkdown/markdown/html/doc.go  |   2 +-
 .../gomarkdown/markdown/html/renderer.go           |   7 +-
 vendor/github.com/google/gops/agent/agent.go       |   2 +-
 vendor/github.com/labstack/echo/v4/CHANGELOG.md    |  10 +
 vendor/github.com/labstack/echo/v4/bind.go         |   4 +
 vendor/github.com/labstack/echo/v4/echo.go         |   2 +-
 .../labstack/echo/v4/middleware/middleware.go      |  46 +-
 .../labstack/echo/v4/middleware/proxy.go           |   5 +-
 .../labstack/echo/v4/middleware/redirect.go        |  45 +-
 .../labstack/echo/v4/middleware/rewrite.go         |   6 +-
 .../labstack/echo/v4/middleware/timeout.go         |   9 +-
 vendor/github.com/slack-go/slack/README.md         |   5 +-
 vendor/github.com/slack-go/slack/apps.go           |   3 +-
 vendor/github.com/slack-go/slack/attachments.go    |   4 +-
 vendor/github.com/slack-go/slack/block.go          |   4 +-
 vendor/github.com/slack-go/slack/block_conv.go     |   2 +
 vendor/github.com/slack-go/slack/channels.go       | 678 ---------------------
 vendor/github.com/slack-go/slack/chat.go           |   3 +-
 vendor/github.com/slack-go/slack/conversation.go   |   6 +-
 vendor/github.com/slack-go/slack/files.go          |   8 +-
 vendor/github.com/slack-go/slack/go.mod            |   2 +-
 vendor/github.com/slack-go/slack/groups.go         | 567 -----------------
 vendor/github.com/slack-go/slack/im.go             | 199 ------
 vendor/github.com/slack-go/slack/info.go           |   3 +-
 vendor/github.com/slack-go/slack/interactions.go   |   4 +-
 vendor/github.com/slack-go/slack/misc.go           |  11 +-
 vendor/github.com/slack-go/slack/slack.go          |   4 +-
 vendor/github.com/slack-go/slack/users.go          |  23 +-
 .../x/text/encoding/simplifiedchinese/hzgb2312.go  |   2 +-
 .../golang.org/x/text/internal/language/parse.go   |  11 +-
 vendor/golang.org/x/text/unicode/bidi/bidi.go      | 221 ++++++-
 vendor/golang.org/x/text/unicode/bidi/core.go      |  63 +-
 vendor/modules.txt                                 |  14 +-
 42 files changed, 406 insertions(+), 1629 deletions(-)

(limited to 'vendor')

diff --git a/vendor/github.com/SevereCloud/vksdk/v2/.golangci.yml b/vendor/github.com/SevereCloud/vksdk/v2/.golangci.yml
index 97b7a3fe..3887ceb7 100644
--- a/vendor/github.com/SevereCloud/vksdk/v2/.golangci.yml
+++ b/vendor/github.com/SevereCloud/vksdk/v2/.golangci.yml
@@ -39,6 +39,13 @@ linters:
     - tparallel
     - errorlint
     - paralleltest
+    - forbidigo
+    - makezero
+    - thelper
+    - predeclared
+    - ifshort
+    - revive
+    - durationcheck
 
 # - wrapcheck # TODO: v3 Fix
 # - testpackage # TODO: Fix testpackage
@@ -62,6 +69,7 @@ linters:
 # - nlreturn
 # - gci
 # - exhaustivestruct
+# - cyclop
 
 issues:
   exclude-rules:
diff --git a/vendor/github.com/SevereCloud/vksdk/v2/doc.go b/vendor/github.com/SevereCloud/vksdk/v2/doc.go
index 7bb83d0c..778f2ecf 100644
--- a/vendor/github.com/SevereCloud/vksdk/v2/doc.go
+++ b/vendor/github.com/SevereCloud/vksdk/v2/doc.go
@@ -7,6 +7,6 @@ package vksdk
 
 // Module constants.
 const (
-	Version = "2.9.0"
+	Version = "2.9.1"
 	API     = "5.126"
 )
diff --git a/vendor/github.com/SevereCloud/vksdk/v2/events/objects.go b/vendor/github.com/SevereCloud/vksdk/v2/events/objects.go
index 8cd94a91..8ee261ac 100644
--- a/vendor/github.com/SevereCloud/vksdk/v2/events/objects.go
+++ b/vendor/github.com/SevereCloud/vksdk/v2/events/objects.go
@@ -316,40 +316,40 @@ type LikeRemoveObject struct {
 
 // DonutSubscriptionCreateObject struct.
 type DonutSubscriptionCreateObject struct {
-	Amount           int     `json:"amount"`
+	Amount           float64 `json:"amount"`
 	AmountWithoutFee float64 `json:"amount_without_fee"`
-	UserID           int     `json:"user_id"`
+	UserID           float64 `json:"user_id"`
 }
 
 // DonutSubscriptionProlongedObject struct.
 type DonutSubscriptionProlongedObject struct {
-	Amount           int     `json:"amount"`
+	Amount           float64 `json:"amount"`
 	AmountWithoutFee float64 `json:"amount_without_fee"`
-	UserID           int     `json:"user_id"`
+	UserID           float64 `json:"user_id"`
 }
 
 // DonutSubscriptionExpiredObject struct.
 type DonutSubscriptionExpiredObject struct {
-	UserID int `json:"user_id"`
+	UserID float64 `json:"user_id"`
 }
 
 // DonutSubscriptionCancelledObject struct.
 type DonutSubscriptionCancelledObject struct {
-	UserID int `json:"user_id"`
+	UserID float64 `json:"user_id"`
 }
 
 // DonutSubscriptionPriceChangedObject struct.
 type DonutSubscriptionPriceChangedObject struct {
-	AmountOld            int     `json:"amount_old"`
-	AmountNew            int     `json:"amount_new"`
+	AmountOld            float64 `json:"amount_old"`
+	AmountNew            float64 `json:"amount_new"`
 	AmountDiff           float64 `json:"amount_diff"`
 	AmountDiffWithoutFee float64 `json:"amount_diff_without_fee"`
-	UserID               int     `json:"user_id"`
+	UserID               float64 `json:"user_id"`
 }
 
 // DonutMoneyWithdrawObject struct.
 type DonutMoneyWithdrawObject struct {
-	Amount           int     `json:"amount"`
+	Amount           float64 `json:"amount"`
 	AmountWithoutFee float64 `json:"amount_without_fee"`
 }
 
diff --git a/vendor/github.com/SevereCloud/vksdk/v2/go.mod b/vendor/github.com/SevereCloud/vksdk/v2/go.mod
index 27f7256f..622b04ad 100644
--- a/vendor/github.com/SevereCloud/vksdk/v2/go.mod
+++ b/vendor/github.com/SevereCloud/vksdk/v2/go.mod
@@ -5,6 +5,6 @@ go 1.13
 require (
 	github.com/gorilla/schema v1.2.0
 	github.com/gorilla/websocket v1.4.2
-	github.com/stretchr/testify v1.6.1
-	golang.org/x/text v0.3.4
+	github.com/stretchr/testify v1.7.0
+	golang.org/x/text v0.3.5
 )
diff --git a/vendor/github.com/SevereCloud/vksdk/v2/go.sum b/vendor/github.com/SevereCloud/vksdk/v2/go.sum
index a9885d73..aea36340 100644
--- a/vendor/github.com/SevereCloud/vksdk/v2/go.sum
+++ b/vendor/github.com/SevereCloud/vksdk/v2/go.sum
@@ -7,10 +7,10 @@ github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/ad
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.6.1 h1:hDPOHmpOpP40lSULcqw7IrRb/u7w6RpDC9399XyoNd0=
-github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-golang.org/x/text v0.3.4 h1:0YWbFKbhXG/wIiuHDSKpS0Iy7FSA+u45VtBMfQcFTTc=
-golang.org/x/text v0.3.4/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+golang.org/x/text v0.3.5 h1:i6eZZ+zk0SOf0xgBpEpPD18qWcJda6q1sxt3S0kzyUQ=
+golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
diff --git a/vendor/github.com/SevereCloud/vksdk/v2/object/ads.go b/vendor/github.com/SevereCloud/vksdk/v2/object/ads.go
index b2d7f135..e0c379b4 100644
--- a/vendor/github.com/SevereCloud/vksdk/v2/object/ads.go
+++ b/vendor/github.com/SevereCloud/vksdk/v2/object/ads.go
@@ -207,8 +207,7 @@ type AdsStatsSexAge struct {
 }
 
 // AdsTargSettings struct.
-type AdsTargSettings struct {
-}
+type AdsTargSettings struct{}
 
 // AdsTargStats struct.
 type AdsTargStats struct {
diff --git a/vendor/github.com/SevereCloud/vksdk/v2/object/messages.go b/vendor/github.com/SevereCloud/vksdk/v2/object/messages.go
index dc2648b1..65c65f53 100644
--- a/vendor/github.com/SevereCloud/vksdk/v2/object/messages.go
+++ b/vendor/github.com/SevereCloud/vksdk/v2/object/messages.go
@@ -721,8 +721,7 @@ type MessagesPinnedMessage struct {
 }
 
 // MessagesUserXtrInvitedBy struct.
-type MessagesUserXtrInvitedBy struct {
-}
+type MessagesUserXtrInvitedBy struct{}
 
 // MessagesForward struct.
 type MessagesForward struct {
diff --git a/vendor/github.com/SevereCloud/vksdk/v2/object/newsfeed.go b/vendor/github.com/SevereCloud/vksdk/v2/object/newsfeed.go
index e9bda35a..857fb4c5 100644
--- a/vendor/github.com/SevereCloud/vksdk/v2/object/newsfeed.go
+++ b/vendor/github.com/SevereCloud/vksdk/v2/object/newsfeed.go
@@ -87,11 +87,11 @@ type NewsfeedItemStoriesBlock struct {
 }
 
 // NewsfeedItemTopic struct.
-type NewsfeedItemTopic struct {
-	// Comments BaseCommentsInfo `json:"comments"`
-	// Likes BaseLikesInfo `json:"likes"`
-	// Text  string        `json:"text"` // Post text
-}
+//
+// Comments BaseCommentsInfo `json:"comments"`
+// Likes BaseLikesInfo `json:"likes"`
+// Text  string        `json:"text"` // Post text.
+type NewsfeedItemTopic struct{}
 
 // NewsfeedItemVideo struct.
 type NewsfeedItemVideo struct {
diff --git a/vendor/github.com/SevereCloud/vksdk/v2/object/wall.go b/vendor/github.com/SevereCloud/vksdk/v2/object/wall.go
index 5345fc5c..3dc2ad4f 100644
--- a/vendor/github.com/SevereCloud/vksdk/v2/object/wall.go
+++ b/vendor/github.com/SevereCloud/vksdk/v2/object/wall.go
@@ -142,7 +142,7 @@ type WallWallpost struct {
 	FriendsOnly    int                      `json:"friends_only"`
 	Comments       BaseCommentsInfo         `json:"comments"`
 	Likes          BaseLikesInfo            `json:"likes"`   // Count of likes
-	Reposts        BaseRepostsInfo          `json:"reposts"` // Count of views
+	Reposts        BaseRepostsInfo          `json:"reposts"` // Count of reposts
 	Views          WallViews                `json:"views"`   // Count of views
 	PostType       string                   `json:"post_type"`
 	PostSource     WallPostSource           `json:"post_source"`
diff --git a/vendor/github.com/gomarkdown/markdown/html/doc.go b/vendor/github.com/gomarkdown/markdown/html/doc.go
index b8d498d6..93a2cf55 100644
--- a/vendor/github.com/gomarkdown/markdown/html/doc.go
+++ b/vendor/github.com/gomarkdown/markdown/html/doc.go
@@ -9,7 +9,7 @@ A renderer can be configured with multiple options:
 
 	flags := html.CommonFlags | html.CompletePage | html.HrefTargetBlank
 	opts := html.RendererOptions{
-		TItle: "A custom title",
+		Title: "A custom title",
 		Flags: flags,
 	}
 	renderer := html.NewRenderer(opts)
diff --git a/vendor/github.com/gomarkdown/markdown/html/renderer.go b/vendor/github.com/gomarkdown/markdown/html/renderer.go
index c57d7eb6..1b466876 100644
--- a/vendor/github.com/gomarkdown/markdown/html/renderer.go
+++ b/vendor/github.com/gomarkdown/markdown/html/renderer.go
@@ -43,6 +43,7 @@ const (
 	SmartypantsAngledQuotes                   // Enable angled double quotes (with Smartypants) for double quotes rendering
 	SmartypantsQuotesNBSP                     // Enable « French guillemets » (with Smartypants)
 	TOC                                       // Generate a table of contents
+	LazyLoadImages                            // Include loading="lazy" with images
 
 	CommonFlags Flags = Smartypants | SmartypantsFractions | SmartypantsDashes | SmartypantsLatexDashes
 )
@@ -589,7 +590,11 @@ func (r *Renderer) imageEnter(w io.Writer, image *ast.Image) {
 		//if options.safe && potentiallyUnsafe(dest) {
 		//out(w, `<img src="" alt="`)
 		//} else {
-		r.Outs(w, `<img src="`)
+		if r.opts.Flags&LazyLoadImages != 0 {
+			r.Outs(w, `<img loading="lazy" src="`)
+		} else {
+			r.Outs(w, `<img src="`)
+		}
 		escLink(w, dest)
 		r.Outs(w, `" alt="`)
 		//}
diff --git a/vendor/github.com/google/gops/agent/agent.go b/vendor/github.com/google/gops/agent/agent.go
index 80be4bb6..5fde1fd1 100644
--- a/vendor/github.com/google/gops/agent/agent.go
+++ b/vendor/github.com/google/gops/agent/agent.go
@@ -59,7 +59,7 @@ type Options struct {
 	ShutdownCleanup bool
 
 	// ReuseSocketAddrAndPort determines whether the SO_REUSEADDR and
-	// SO_REUSEADDR socket options should be set on the listening socket of
+	// SO_REUSEPORT socket options should be set on the listening socket of
 	// the agent. This option is only effective on unix-like OSes and if
 	// Addr is set to a fixed host:port.
 	// Optional.
diff --git a/vendor/github.com/labstack/echo/v4/CHANGELOG.md b/vendor/github.com/labstack/echo/v4/CHANGELOG.md
index b5047883..c1be77a9 100644
--- a/vendor/github.com/labstack/echo/v4/CHANGELOG.md
+++ b/vendor/github.com/labstack/echo/v4/CHANGELOG.md
@@ -1,5 +1,15 @@
 # Changelog
 
+## v4.2.2 - 2020-04-07
+
+**Fixes**
+
+* Allow proxy middleware to use query part in rewrite (#1802)
+* Fix timeout middleware not sending status code when handler returns an error (#1805)
+* Fix Bind() when target is array/slice and path/query params complains bind target not being struct (#1835)
+* Fix panic in redirect middleware on short host name (#1813)
+* Fix timeout middleware docs (#1836)
+
 ## v4.2.1 - 2020-03-08
 
 **Important notes**
diff --git a/vendor/github.com/labstack/echo/v4/bind.go b/vendor/github.com/labstack/echo/v4/bind.go
index 16c3b7ad..08d39891 100644
--- a/vendor/github.com/labstack/echo/v4/bind.go
+++ b/vendor/github.com/labstack/echo/v4/bind.go
@@ -134,6 +134,10 @@ func (b *DefaultBinder) bindData(destination interface{}, data map[string][]stri
 
 	// !struct
 	if typ.Kind() != reflect.Struct {
+		if tag == "param" || tag == "query" {
+			// incompatible type, data is probably to be found in the body
+			return nil
+		}
 		return errors.New("binding element must be a struct")
 	}
 
diff --git a/vendor/github.com/labstack/echo/v4/echo.go b/vendor/github.com/labstack/echo/v4/echo.go
index 3fccaf64..a24e3977 100644
--- a/vendor/github.com/labstack/echo/v4/echo.go
+++ b/vendor/github.com/labstack/echo/v4/echo.go
@@ -234,7 +234,7 @@ const (
 
 const (
 	// Version of Echo
-	Version = "4.2.1"
+	Version = "4.2.2"
 	website = "https://echo.labstack.com"
 	// http://patorjk.com/software/taag/#p=display&f=Small%20Slant&t=Echo
 	banner = `
diff --git a/vendor/github.com/labstack/echo/v4/middleware/middleware.go b/vendor/github.com/labstack/echo/v4/middleware/middleware.go
index 6bdb0eb7..a7ad73a5 100644
--- a/vendor/github.com/labstack/echo/v4/middleware/middleware.go
+++ b/vendor/github.com/labstack/echo/v4/middleware/middleware.go
@@ -2,7 +2,6 @@ package middleware
 
 import (
 	"net/http"
-	"net/url"
 	"regexp"
 	"strconv"
 	"strings"
@@ -49,30 +48,39 @@ func rewriteRulesRegex(rewrite map[string]string) map[*regexp.Regexp]string {
 	return rulesRegex
 }
 
-func rewritePath(rewriteRegex map[*regexp.Regexp]string, req *http.Request) {
-	for k, v := range rewriteRegex {
-		rawPath := req.URL.RawPath
-		if rawPath != "" {
-			// RawPath is only set when there has been escaping done. In that case Path must be deduced from rewritten RawPath
-			// because encoded Path could match rules that RawPath did not
-			if replacer := captureTokens(k, rawPath); replacer != nil {
-				rawPath = replacer.Replace(v)
-
-				req.URL.RawPath = rawPath
-				req.URL.Path, _ = url.PathUnescape(rawPath)
-
-				return // rewrite only once
-			}
+func rewriteURL(rewriteRegex map[*regexp.Regexp]string, req *http.Request) error {
+	if len(rewriteRegex) == 0 {
+		return nil
+	}
 
-			continue
+	// Depending how HTTP request is sent RequestURI could contain Scheme://Host/path or be just /path.
+	// We only want to use path part for rewriting and therefore trim prefix if it exists
+	rawURI := req.RequestURI
+	if rawURI != "" && rawURI[0] != '/' {
+		prefix := ""
+		if req.URL.Scheme != "" {
+			prefix = req.URL.Scheme + "://"
 		}
+		if req.URL.Host != "" {
+			prefix += req.URL.Host // host or host:port
+		}
+		if prefix != "" {
+			rawURI = strings.TrimPrefix(rawURI, prefix)
+		}
+	}
 
-		if replacer := captureTokens(k, req.URL.Path); replacer != nil {
-			req.URL.Path = replacer.Replace(v)
+	for k, v := range rewriteRegex {
+		if replacer := captureTokens(k, rawURI); replacer != nil {
+			url, err := req.URL.Parse(replacer.Replace(v))
+			if err != nil {
+				return err
+			}
+			req.URL = url
 
-			return // rewrite only once
+			return nil // rewrite only once
 		}
 	}
+	return nil
 }
 
 // DefaultSkipper returns false which processes the middleware.
diff --git a/vendor/github.com/labstack/echo/v4/middleware/proxy.go b/vendor/github.com/labstack/echo/v4/middleware/proxy.go
index 63eec5a2..6f01f3a7 100644
--- a/vendor/github.com/labstack/echo/v4/middleware/proxy.go
+++ b/vendor/github.com/labstack/echo/v4/middleware/proxy.go
@@ -231,8 +231,9 @@ func ProxyWithConfig(config ProxyConfig) echo.MiddlewareFunc {
 			tgt := config.Balancer.Next(c)
 			c.Set(config.ContextKey, tgt)
 
-			// Set rewrite path and raw path
-			rewritePath(config.RegexRewrite, req)
+			if err := rewriteURL(config.RegexRewrite, req); err != nil {
+				return err
+			}
 
 			// Fix header
 			// Basically it's not good practice to unconditionally pass incoming x-real-ip header to upstream.
diff --git a/vendor/github.com/labstack/echo/v4/middleware/redirect.go b/vendor/github.com/labstack/echo/v4/middleware/redirect.go
index 813e5b85..13877db3 100644
--- a/vendor/github.com/labstack/echo/v4/middleware/redirect.go
+++ b/vendor/github.com/labstack/echo/v4/middleware/redirect.go
@@ -2,6 +2,7 @@ package middleware
 
 import (
 	"net/http"
+	"strings"
 
 	"github.com/labstack/echo/v4"
 )
@@ -40,11 +41,11 @@ func HTTPSRedirect() echo.MiddlewareFunc {
 // HTTPSRedirectWithConfig returns an HTTPSRedirect middleware with config.
 // See `HTTPSRedirect()`.
 func HTTPSRedirectWithConfig(config RedirectConfig) echo.MiddlewareFunc {
-	return redirect(config, func(scheme, host, uri string) (ok bool, url string) {
-		if ok = scheme != "https"; ok {
-			url = "https://" + host + uri
+	return redirect(config, func(scheme, host, uri string) (bool, string) {
+		if scheme != "https" {
+			return true, "https://" + host + uri
 		}
-		return
+		return false, ""
 	})
 }
 
@@ -59,11 +60,11 @@ func HTTPSWWWRedirect() echo.MiddlewareFunc {
 // HTTPSWWWRedirectWithConfig returns an HTTPSRedirect middleware with config.
 // See `HTTPSWWWRedirect()`.
 func HTTPSWWWRedirectWithConfig(config RedirectConfig) echo.MiddlewareFunc {
-	return redirect(config, func(scheme, host, uri string) (ok bool, url string) {
-		if ok = scheme != "https" && host[:4] != www; ok {
-			url = "https://www." + host + uri
+	return redirect(config, func(scheme, host, uri string) (bool, string) {
+		if scheme != "https" && !strings.HasPrefix(host, www) {
+			return true, "https://www." + host + uri
 		}
-		return
+		return false, ""
 	})
 }
 
@@ -79,13 +80,11 @@ func HTTPSNonWWWRedirect() echo.MiddlewareFunc {
 // See `HTTPSNonWWWRedirect()`.
 func HTTPSNonWWWRedirectWithConfig(config RedirectConfig) echo.MiddlewareFunc {
 	return redirect(config, func(scheme, host, uri string) (ok bool, url string) {
-		if ok = scheme != "https"; ok {
-			if host[:4] == www {
-				host = host[4:]
-			}
-			url = "https://" + host + uri
+		if scheme != "https" {
+			host = strings.TrimPrefix(host, www)
+			return true, "https://" + host + uri
 		}
-		return
+		return false, ""
 	})
 }
 
@@ -100,11 +99,11 @@ func WWWRedirect() echo.MiddlewareFunc {
 // WWWRedirectWithConfig returns an HTTPSRedirect middleware with config.
 // See `WWWRedirect()`.
 func WWWRedirectWithConfig(config RedirectConfig) echo.MiddlewareFunc {
-	return redirect(config, func(scheme, host, uri string) (ok bool, url string) {
-		if ok = host[:4] != www; ok {
-			url = scheme + "://www." + host + uri
+	return redirect(config, func(scheme, host, uri string) (bool, string) {
+		if !strings.HasPrefix(host, www) {
+			return true, scheme + "://www." + host + uri
 		}
-		return
+		return false, ""
 	})
 }
 
@@ -119,17 +118,17 @@ func NonWWWRedirect() echo.MiddlewareFunc {
 // NonWWWRedirectWithConfig returns an HTTPSRedirect middleware with config.
 // See `NonWWWRedirect()`.
 func NonWWWRedirectWithConfig(config RedirectConfig) echo.MiddlewareFunc {
-	return redirect(config, func(scheme, host, uri string) (ok bool, url string) {
-		if ok = host[:4] == www; ok {
-			url = scheme + "://" + host[4:] + uri
+	return redirect(config, func(scheme, host, uri string) (bool, string) {
+		if strings.HasPrefix(host, www) {
+			return true, scheme + "://" + host[4:] + uri
 		}
-		return
+		return false, ""
 	})
 }
 
 func redirect(config RedirectConfig, cb redirectLogic) echo.MiddlewareFunc {
 	if config.Skipper == nil {
-		config.Skipper = DefaultTrailingSlashConfig.Skipper
+		config.Skipper = DefaultRedirectConfig.Skipper
 	}
 	if config.Code == 0 {
 		config.Code = DefaultRedirectConfig.Code
diff --git a/vendor/github.com/labstack/echo/v4/middleware/rewrite.go b/vendor/github.com/labstack/echo/v4/middleware/rewrite.go
index c05d5d84..e5b0a6b5 100644
--- a/vendor/github.com/labstack/echo/v4/middleware/rewrite.go
+++ b/vendor/github.com/labstack/echo/v4/middleware/rewrite.go
@@ -72,9 +72,9 @@ func RewriteWithConfig(config RewriteConfig) echo.MiddlewareFunc {
 				return next(c)
 			}
 
-			req := c.Request()
-			// Set rewrite path and raw path
-			rewritePath(config.RegexRules, req)
+			if err := rewriteURL(config.RegexRules, c.Request()); err != nil {
+				return err
+			}
 			return next(c)
 		}
 	}
diff --git a/vendor/github.com/labstack/echo/v4/middleware/timeout.go b/vendor/github.com/labstack/echo/v4/middleware/timeout.go
index 68f464e4..5d23ff45 100644
--- a/vendor/github.com/labstack/echo/v4/middleware/timeout.go
+++ b/vendor/github.com/labstack/echo/v4/middleware/timeout.go
@@ -42,8 +42,8 @@ var (
 	}
 )
 
-// Timeout returns a middleware which recovers from panics anywhere in the chain
-// and handles the control to the centralized HTTPErrorHandler.
+// Timeout returns a middleware which returns error (503 Service Unavailable error) to client immediately when handler
+// call runs for longer than its time limit. NB: timeout does not stop handler execution.
 func Timeout() echo.MiddlewareFunc {
 	return TimeoutWithConfig(DefaultTimeoutConfig)
 }
@@ -106,6 +106,11 @@ func (t echoHandlerFuncWrapper) ServeHTTP(rw http.ResponseWriter, r *http.Reques
 	// so on timeout writer stays what http.TimeoutHandler uses and prevents writing headers/body
 	t.ctx.Response().Writer = originalWriter
 	if err != nil {
+		// call global error handler to write error to the client. This is needed or `http.TimeoutHandler` will send status code by itself
+		// and after that our tries to write status code will not work anymore
+		t.ctx.Error(err)
+		// we pass error from handler to middlewares up in handler chain to act on it if needed. But this means that
+		// global error handler is probably be called twice as `t.ctx.Error` already does that.
 		t.errChan <- err
 	}
 }
diff --git a/vendor/github.com/slack-go/slack/README.md b/vendor/github.com/slack-go/slack/README.md
index 7be89066..dc83eaa8 100644
--- a/vendor/github.com/slack-go/slack/README.md
+++ b/vendor/github.com/slack-go/slack/README.md
@@ -1,5 +1,6 @@
-Slack API in Go [![GoDoc](https://godoc.org/github.com/slack-go/slack?status.svg)](https://godoc.org/github.com/slack-go/slack) [![Build Status](https://travis-ci.org/slack-go/slack.svg)](https://travis-ci.org/slack-go/slack)
+Slack API in Go [![Go Reference](https://pkg.go.dev/badge/github.com/slack-go/slack.svg)](https://pkg.go.dev/github.com/slack-go/slack)
 ===============
+
 This is the original Slack library for Go created by Norberto Lopes, transferred to a Github organization.
 
 [![Join the chat at https://gitter.im/go-slack/Lobby](https://badges.gitter.im/go-slack/Lobby.svg)](https://gitter.im/go-slack/Lobby?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
@@ -14,7 +15,7 @@ a fully managed way.
 There is currently no major version released.
 Therefore, minor version releases may include backward incompatible changes.
 
-See [CHANGELOG.md](https://github.com/slack-go/slack/blob/master/CHANGELOG.md) for more information about the changes.
+See [CHANGELOG.md](https://github.com/slack-go/slack/blob/master/CHANGELOG.md) or [Releases](https://github.com/slack-go/slack/releases) for more information about the changes.
 
 ## Installing
 
diff --git a/vendor/github.com/slack-go/slack/apps.go b/vendor/github.com/slack-go/slack/apps.go
index d9749438..4f60da0a 100644
--- a/vendor/github.com/slack-go/slack/apps.go
+++ b/vendor/github.com/slack-go/slack/apps.go
@@ -45,14 +45,13 @@ func (api *Client) ListEventAuthorizationsContext(ctx context.Context, eventCont
 
 func (api *Client) UninstallApp(clientID, clientSecret string) error {
 	values := url.Values{
-		"token":         {api.token},
 		"client_id":     {clientID},
 		"client_secret": {clientSecret},
 	}
 
 	response := SlackResponse{}
 
-	err := api.getMethod(context.Background(), "apps.uninstall", values, &response)
+	err := api.getMethod(context.Background(), "apps.uninstall", api.token, values, &response)
 	if err != nil {
 		return err
 	}
diff --git a/vendor/github.com/slack-go/slack/attachments.go b/vendor/github.com/slack-go/slack/attachments.go
index 69b223a2..f4eb9b93 100644
--- a/vendor/github.com/slack-go/slack/attachments.go
+++ b/vendor/github.com/slack-go/slack/attachments.go
@@ -17,7 +17,7 @@ type AttachmentAction struct {
 	Name            string                        `json:"name"`                       // Required.
 	Text            string                        `json:"text"`                       // Required.
 	Style           string                        `json:"style,omitempty"`            // Optional. Allowed values: "default", "primary", "danger".
-	Type            actionType                    `json:"type"`                       // Required. Must be set to "button" or "select".
+	Type            ActionType                    `json:"type"`                       // Required. Must be set to "button" or "select".
 	Value           string                        `json:"value,omitempty"`            // Optional.
 	DataSource      string                        `json:"data_source,omitempty"`      // Optional.
 	MinQueryLength  int                           `json:"min_query_length,omitempty"` // Optional. Default value is 1.
@@ -29,7 +29,7 @@ type AttachmentAction struct {
 }
 
 // actionType returns the type of the action
-func (a AttachmentAction) actionType() actionType {
+func (a AttachmentAction) actionType() ActionType {
 	return a.Type
 }
 
diff --git a/vendor/github.com/slack-go/slack/block.go b/vendor/github.com/slack-go/slack/block.go
index 9946a294..3686db85 100644
--- a/vendor/github.com/slack-go/slack/block.go
+++ b/vendor/github.com/slack-go/slack/block.go
@@ -35,7 +35,7 @@ type Blocks struct {
 type BlockAction struct {
 	ActionID              string              `json:"action_id"`
 	BlockID               string              `json:"block_id"`
-	Type                  actionType          `json:"type"`
+	Type                  ActionType          `json:"type"`
 	Text                  TextBlockObject     `json:"text"`
 	Value                 string              `json:"value"`
 	ActionTs              string              `json:"action_ts"`
@@ -58,7 +58,7 @@ type BlockAction struct {
 }
 
 // actionType returns the type of the action
-func (b BlockAction) actionType() actionType {
+func (b BlockAction) actionType() ActionType {
 	return b.Type
 }
 
diff --git a/vendor/github.com/slack-go/slack/block_conv.go b/vendor/github.com/slack-go/slack/block_conv.go
index f2d744c4..6936700a 100644
--- a/vendor/github.com/slack-go/slack/block_conv.go
+++ b/vendor/github.com/slack-go/slack/block_conv.go
@@ -181,6 +181,8 @@ func (b *BlockElements) UnmarshalJSON(data []byte) error {
 			blockElement = &OverflowBlockElement{}
 		case "datepicker":
 			blockElement = &DatePickerBlockElement{}
+		case "timepicker":
+			blockElement = &TimePickerBlockElement{}
 		case "plain_text_input":
 			blockElement = &PlainTextInputBlockElement{}
 		case "checkboxes":
diff --git a/vendor/github.com/slack-go/slack/channels.go b/vendor/github.com/slack-go/slack/channels.go
index c05521d0..2fca8b92 100644
--- a/vendor/github.com/slack-go/slack/channels.go
+++ b/vendor/github.com/slack-go/slack/channels.go
@@ -3,8 +3,6 @@ package slack
 import (
 	"context"
 	"net/url"
-	"strconv"
-	"time"
 )
 
 type channelResponseFull struct {
@@ -19,12 +17,6 @@ type channelResponseFull struct {
 }
 
 // Channel contains information about the channel
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
 type Channel struct {
 	GroupConversation
 	IsChannel bool   `json:"is_channel"`
@@ -42,673 +34,3 @@ func (api *Client) channelRequest(ctx context.Context, path string, values url.V
 
 	return response, response.Err()
 }
-
-// GetChannelsOption option provided when getting channels.
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-type GetChannelsOption func(*ChannelPagination) error
-
-// GetChannelsOptionExcludeMembers excludes the members collection from each channel.
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func GetChannelsOptionExcludeMembers() GetChannelsOption {
-	return func(p *ChannelPagination) error {
-		p.excludeMembers = true
-		return nil
-	}
-}
-
-// GetChannelsOptionExcludeArchived excludes archived channels from results.
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func GetChannelsOptionExcludeArchived() GetChannelsOption {
-	return func(p *ChannelPagination) error {
-		p.excludeArchived = true
-		return nil
-	}
-}
-
-// ArchiveChannel archives the given channel
-// see https://api.slack.com/methods/channels.archive
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) ArchiveChannel(channelID string) error {
-	return api.ArchiveChannelContext(context.Background(), channelID)
-}
-
-// ArchiveChannelContext archives the given channel with a custom context
-// see https://api.slack.com/methods/channels.archive
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) ArchiveChannelContext(ctx context.Context, channelID string) (err error) {
-	values := url.Values{
-		"token":   {api.token},
-		"channel": {channelID},
-	}
-
-	_, err = api.channelRequest(ctx, "channels.archive", values)
-	return err
-}
-
-// UnarchiveChannel unarchives the given channel
-// see https://api.slack.com/methods/channels.unarchive
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) UnarchiveChannel(channelID string) error {
-	return api.UnarchiveChannelContext(context.Background(), channelID)
-}
-
-// UnarchiveChannelContext unarchives the given channel with a custom context
-// see https://api.slack.com/methods/channels.unarchive
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) UnarchiveChannelContext(ctx context.Context, channelID string) (err error) {
-	values := url.Values{
-		"token":   {api.token},
-		"channel": {channelID},
-	}
-
-	_, err = api.channelRequest(ctx, "channels.unarchive", values)
-	return err
-}
-
-// CreateChannel creates a channel with the given name and returns a *Channel
-// see https://api.slack.com/methods/channels.create
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) CreateChannel(channelName string) (*Channel, error) {
-	return api.CreateChannelContext(context.Background(), channelName)
-}
-
-// CreateChannelContext creates a channel with the given name and returns a *Channel with a custom context
-// see https://api.slack.com/methods/channels.create
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) CreateChannelContext(ctx context.Context, channelName string) (*Channel, error) {
-	values := url.Values{
-		"token": {api.token},
-		"name":  {channelName},
-	}
-
-	response, err := api.channelRequest(ctx, "channels.create", values)
-	if err != nil {
-		return nil, err
-	}
-	return &response.Channel, nil
-}
-
-// GetChannelHistory retrieves the channel history
-// see https://api.slack.com/methods/channels.history
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) GetChannelHistory(channelID string, params HistoryParameters) (*History, error) {
-	return api.GetChannelHistoryContext(context.Background(), channelID, params)
-}
-
-// GetChannelHistoryContext retrieves the channel history with a custom context
-// see https://api.slack.com/methods/channels.history
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) GetChannelHistoryContext(ctx context.Context, channelID string, params HistoryParameters) (*History, error) {
-	values := url.Values{
-		"token":   {api.token},
-		"channel": {channelID},
-	}
-	if params.Latest != DEFAULT_HISTORY_LATEST {
-		values.Add("latest", params.Latest)
-	}
-	if params.Oldest != DEFAULT_HISTORY_OLDEST {
-		values.Add("oldest", params.Oldest)
-	}
-	if params.Count != DEFAULT_HISTORY_COUNT {
-		values.Add("count", strconv.Itoa(params.Count))
-	}
-	if params.Inclusive != DEFAULT_HISTORY_INCLUSIVE {
-		if params.Inclusive {
-			values.Add("inclusive", "1")
-		} else {
-			values.Add("inclusive", "0")
-		}
-	}
-
-	if params.Unreads != DEFAULT_HISTORY_UNREADS {
-		if params.Unreads {
-			values.Add("unreads", "1")
-		} else {
-			values.Add("unreads", "0")
-		}
-	}
-
-	response, err := api.channelRequest(ctx, "channels.history", values)
-	if err != nil {
-		return nil, err
-	}
-	return &response.History, nil
-}
-
-// GetChannelInfo retrieves the given channel
-// see https://api.slack.com/methods/channels.info
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) GetChannelInfo(channelID string) (*Channel, error) {
-	return api.GetChannelInfoContext(context.Background(), channelID)
-}
-
-// GetChannelInfoContext retrieves the given channel with a custom context
-// see https://api.slack.com/methods/channels.info
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) GetChannelInfoContext(ctx context.Context, channelID string) (*Channel, error) {
-	values := url.Values{
-		"token":          {api.token},
-		"channel":        {channelID},
-		"include_locale": {strconv.FormatBool(true)},
-	}
-
-	response, err := api.channelRequest(ctx, "channels.info", values)
-	if err != nil {
-		return nil, err
-	}
-	return &response.Channel, nil
-}
-
-// InviteUserToChannel invites a user to a given channel and returns a *Channel
-// see https://api.slack.com/methods/channels.invite
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) InviteUserToChannel(channelID, user string) (*Channel, error) {
-	return api.InviteUserToChannelContext(context.Background(), channelID, user)
-}
-
-// InviteUserToChannelContext invites a user to a given channel and returns a *Channel with a custom context
-// see https://api.slack.com/methods/channels.invite
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) InviteUserToChannelContext(ctx context.Context, channelID, user string) (*Channel, error) {
-	values := url.Values{
-		"token":   {api.token},
-		"channel": {channelID},
-		"user":    {user},
-	}
-
-	response, err := api.channelRequest(ctx, "channels.invite", values)
-	if err != nil {
-		return nil, err
-	}
-	return &response.Channel, nil
-}
-
-// JoinChannel joins the currently authenticated user to a channel
-// see https://api.slack.com/methods/channels.join
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) JoinChannel(channelName string) (*Channel, error) {
-	return api.JoinChannelContext(context.Background(), channelName)
-}
-
-// JoinChannelContext joins the currently authenticated user to a channel with a custom context
-// see https://api.slack.com/methods/channels.join
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) JoinChannelContext(ctx context.Context, channelName string) (*Channel, error) {
-	values := url.Values{
-		"token": {api.token},
-		"name":  {channelName},
-	}
-
-	response, err := api.channelRequest(ctx, "channels.join", values)
-	if err != nil {
-		return nil, err
-	}
-	return &response.Channel, nil
-}
-
-// LeaveChannel makes the authenticated user leave the given channel
-// see https://api.slack.com/methods/channels.leave
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) LeaveChannel(channelID string) (bool, error) {
-	return api.LeaveChannelContext(context.Background(), channelID)
-}
-
-// LeaveChannelContext makes the authenticated user leave the given channel with a custom context
-// see https://api.slack.com/methods/channels.leave
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) LeaveChannelContext(ctx context.Context, channelID string) (bool, error) {
-	values := url.Values{
-		"token":   {api.token},
-		"channel": {channelID},
-	}
-
-	response, err := api.channelRequest(ctx, "channels.leave", values)
-	if err != nil {
-		return false, err
-	}
-
-	return response.NotInChannel, nil
-}
-
-// KickUserFromChannel kicks a user from a given channel
-// see https://api.slack.com/methods/channels.kick
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) KickUserFromChannel(channelID, user string) error {
-	return api.KickUserFromChannelContext(context.Background(), channelID, user)
-}
-
-// KickUserFromChannelContext kicks a user from a given channel with a custom context
-// see https://api.slack.com/methods/channels.kick
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) KickUserFromChannelContext(ctx context.Context, channelID, user string) (err error) {
-	values := url.Values{
-		"token":   {api.token},
-		"channel": {channelID},
-		"user":    {user},
-	}
-
-	_, err = api.channelRequest(ctx, "channels.kick", values)
-	return err
-}
-
-func newChannelPagination(c *Client, options ...GetChannelsOption) (cp ChannelPagination) {
-	cp = ChannelPagination{
-		c:     c,
-		limit: 200, // per slack api documentation.
-	}
-
-	for _, opt := range options {
-		opt(&cp)
-	}
-
-	return cp
-}
-
-// ChannelPagination allows for paginating over the channels
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-type ChannelPagination struct {
-	Channels        []Channel
-	limit           int
-	excludeArchived bool
-	excludeMembers  bool
-	previousResp    *ResponseMetadata
-	c               *Client
-}
-
-// Done checks if the pagination has completed
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (ChannelPagination) Done(err error) bool {
-	return err == errPaginationComplete
-}
-
-// Failure checks if pagination failed.
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (t ChannelPagination) Failure(err error) error {
-	if t.Done(err) {
-		return nil
-	}
-
-	return err
-}
-
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (t ChannelPagination) Next(ctx context.Context) (_ ChannelPagination, err error) {
-	var (
-		resp *channelResponseFull
-	)
-
-	if t.c == nil || (t.previousResp != nil && t.previousResp.Cursor == "") {
-		return t, errPaginationComplete
-	}
-
-	t.previousResp = t.previousResp.initialize()
-
-	values := url.Values{
-		"limit":            {strconv.Itoa(t.limit)},
-		"exclude_archived": {strconv.FormatBool(t.excludeArchived)},
-		"exclude_members":  {strconv.FormatBool(t.excludeMembers)},
-		"token":            {t.c.token},
-		"cursor":           {t.previousResp.Cursor},
-	}
-
-	if resp, err = t.c.channelRequest(ctx, "channels.list", values); err != nil {
-		return t, err
-	}
-
-	t.c.Debugf("GetChannelsContext: got %d channels; metadata %v", len(resp.Channels), resp.Metadata)
-	t.Channels = resp.Channels
-	t.previousResp = &resp.Metadata
-
-	return t, nil
-}
-
-// GetChannelsPaginated fetches channels in a paginated fashion, see GetChannelsContext for usage.
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) GetChannelsPaginated(options ...GetChannelsOption) ChannelPagination {
-	return newChannelPagination(api, options...)
-}
-
-// GetChannels retrieves all the channels
-// see https://api.slack.com/methods/channels.list
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) GetChannels(excludeArchived bool, options ...GetChannelsOption) ([]Channel, error) {
-	return api.GetChannelsContext(context.Background(), excludeArchived, options...)
-}
-
-// GetChannelsContext retrieves all the channels with a custom context
-// see https://api.slack.com/methods/channels.list
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) GetChannelsContext(ctx context.Context, excludeArchived bool, options ...GetChannelsOption) (results []Channel, err error) {
-	if excludeArchived {
-		options = append(options, GetChannelsOptionExcludeArchived())
-	}
-
-	p := api.GetChannelsPaginated(options...)
-	for err == nil {
-		p, err = p.Next(ctx)
-		if err == nil {
-			results = append(results, p.Channels...)
-		} else if rateLimitedError, ok := err.(*RateLimitedError); ok {
-			select {
-			case <-ctx.Done():
-				err = ctx.Err()
-			case <-time.After(rateLimitedError.RetryAfter):
-				err = nil
-			}
-		}
-	}
-
-	return results, p.Failure(err)
-}
-
-// SetChannelReadMark sets the read mark of a given channel to a specific point
-// Clients should try to avoid making this call too often. When needing to mark a read position, a client should set a
-// timer before making the call. In this way, any further updates needed during the timeout will not generate extra calls
-// (just one per channel). This is useful for when reading scroll-back history, or following a busy live channel. A
-// timeout of 5 seconds is a good starting point. Be sure to flush these calls on shutdown/logout.
-// see https://api.slack.com/methods/channels.mark
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) SetChannelReadMark(channelID, ts string) error {
-	return api.SetChannelReadMarkContext(context.Background(), channelID, ts)
-}
-
-// SetChannelReadMarkContext sets the read mark of a given channel to a specific point with a custom context
-// For more details see SetChannelReadMark documentation
-// see https://api.slack.com/methods/channels.mark
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) SetChannelReadMarkContext(ctx context.Context, channelID, ts string) (err error) {
-	values := url.Values{
-		"token":   {api.token},
-		"channel": {channelID},
-		"ts":      {ts},
-	}
-
-	_, err = api.channelRequest(ctx, "channels.mark", values)
-	return err
-}
-
-// RenameChannel renames a given channel
-// see https://api.slack.com/methods/channels.rename
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) RenameChannel(channelID, name string) (*Channel, error) {
-	return api.RenameChannelContext(context.Background(), channelID, name)
-}
-
-// RenameChannelContext renames a given channel with a custom context
-// see https://api.slack.com/methods/channels.rename
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) RenameChannelContext(ctx context.Context, channelID, name string) (*Channel, error) {
-	values := url.Values{
-		"token":   {api.token},
-		"channel": {channelID},
-		"name":    {name},
-	}
-
-	// XXX: the created entry in this call returns a string instead of a number
-	// so I may have to do some workaround to solve it.
-	response, err := api.channelRequest(ctx, "channels.rename", values)
-	if err != nil {
-		return nil, err
-	}
-	return &response.Channel, nil
-}
-
-// SetChannelPurpose sets the channel purpose and returns the purpose that was successfully set
-// see https://api.slack.com/methods/channels.setPurpose
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) SetChannelPurpose(channelID, purpose string) (string, error) {
-	return api.SetChannelPurposeContext(context.Background(), channelID, purpose)
-}
-
-// SetChannelPurposeContext sets the channel purpose and returns the purpose that was successfully set with a custom context
-// see https://api.slack.com/methods/channels.setPurpose
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) SetChannelPurposeContext(ctx context.Context, channelID, purpose string) (string, error) {
-	values := url.Values{
-		"token":   {api.token},
-		"channel": {channelID},
-		"purpose": {purpose},
-	}
-
-	response, err := api.channelRequest(ctx, "channels.setPurpose", values)
-	if err != nil {
-		return "", err
-	}
-	return response.Purpose, nil
-}
-
-// SetChannelTopic sets the channel topic and returns the topic that was successfully set
-// see https://api.slack.com/methods/channels.setTopic
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) SetChannelTopic(channelID, topic string) (string, error) {
-	return api.SetChannelTopicContext(context.Background(), channelID, topic)
-}
-
-// SetChannelTopicContext sets the channel topic and returns the topic that was successfully set with a custom context
-// see https://api.slack.com/methods/channels.setTopic
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) SetChannelTopicContext(ctx context.Context, channelID, topic string) (string, error) {
-	values := url.Values{
-		"token":   {api.token},
-		"channel": {channelID},
-		"topic":   {topic},
-	}
-
-	response, err := api.channelRequest(ctx, "channels.setTopic", values)
-	if err != nil {
-		return "", err
-	}
-	return response.Topic, nil
-}
-
-// GetChannelReplies gets an entire thread (a message plus all the messages in reply to it).
-// see https://api.slack.com/methods/channels.replies
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) GetChannelReplies(channelID, thread_ts string) ([]Message, error) {
-	return api.GetChannelRepliesContext(context.Background(), channelID, thread_ts)
-}
-
-// GetChannelRepliesContext gets an entire thread (a message plus all the messages in reply to it) with a custom context
-// see https://api.slack.com/methods/channels.replies
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) GetChannelRepliesContext(ctx context.Context, channelID, thread_ts string) ([]Message, error) {
-	values := url.Values{
-		"token":     {api.token},
-		"channel":   {channelID},
-		"thread_ts": {thread_ts},
-	}
-	response, err := api.channelRequest(ctx, "channels.replies", values)
-	if err != nil {
-		return nil, err
-	}
-	return response.History.Messages, nil
-}
diff --git a/vendor/github.com/slack-go/slack/chat.go b/vendor/github.com/slack-go/slack/chat.go
index f5b80346..2a1e452e 100644
--- a/vendor/github.com/slack-go/slack/chat.go
+++ b/vendor/github.com/slack-go/slack/chat.go
@@ -744,7 +744,6 @@ func (api *Client) GetPermalink(params *PermalinkParameters) (string, error) {
 // GetPermalinkContext returns the permalink for a message using a custom context.
 func (api *Client) GetPermalinkContext(ctx context.Context, params *PermalinkParameters) (string, error) {
 	values := url.Values{
-		"token":      {api.token},
 		"channel":    {params.Channel},
 		"message_ts": {params.Ts},
 	}
@@ -754,7 +753,7 @@ func (api *Client) GetPermalinkContext(ctx context.Context, params *PermalinkPar
 		Permalink string `json:"permalink"`
 		SlackResponse
 	}{}
-	err := api.getMethod(ctx, "chat.getPermalink", values, &response)
+	err := api.getMethod(ctx, "chat.getPermalink", api.token, values, &response)
 	if err != nil {
 		return "", err
 	}
diff --git a/vendor/github.com/slack-go/slack/conversation.go b/vendor/github.com/slack-go/slack/conversation.go
index 6fc4a083..17b6d8a4 100644
--- a/vendor/github.com/slack-go/slack/conversation.go
+++ b/vendor/github.com/slack-go/slack/conversation.go
@@ -455,7 +455,7 @@ func (api *Client) GetConversationRepliesContext(ctx context.Context, params *Ge
 
 type GetConversationsParameters struct {
 	Cursor          string
-	ExcludeArchived string
+	ExcludeArchived bool
 	Limit           int
 	Types           []string
 }
@@ -479,8 +479,8 @@ func (api *Client) GetConversationsContext(ctx context.Context, params *GetConve
 	if params.Types != nil {
 		values.Add("types", strings.Join(params.Types, ","))
 	}
-	if params.ExcludeArchived == "true" {
-		values.Add("exclude_archived", "true")
+	if params.ExcludeArchived {
+		values.Add("exclude_archived", strconv.FormatBool(params.ExcludeArchived))
 	}
 
 	response := struct {
diff --git a/vendor/github.com/slack-go/slack/files.go b/vendor/github.com/slack-go/slack/files.go
index 713038f0..3889fe1d 100644
--- a/vendor/github.com/slack-go/slack/files.go
+++ b/vendor/github.com/slack-go/slack/files.go
@@ -295,9 +295,7 @@ func (api *Client) UploadFileContext(ctx context.Context, params FileUploadParam
 		return nil, err
 	}
 	response := &fileResponseFull{}
-	values := url.Values{
-		"token": {api.token},
-	}
+	values := url.Values{}
 	if params.Filetype != "" {
 		values.Add("filetype", params.Filetype)
 	}
@@ -320,12 +318,12 @@ func (api *Client) UploadFileContext(ctx context.Context, params FileUploadParam
 		values.Add("content", params.Content)
 		err = api.postMethod(ctx, "files.upload", values, response)
 	} else if params.File != "" {
-		err = postLocalWithMultipartResponse(ctx, api.httpclient, api.endpoint+"files.upload", params.File, "file", values, response, api)
+		err = postLocalWithMultipartResponse(ctx, api.httpclient, api.endpoint+"files.upload", params.File, "file", api.token, values, response, api)
 	} else if params.Reader != nil {
 		if params.Filename == "" {
 			return nil, fmt.Errorf("files.upload: FileUploadParameters.Filename is mandatory when using FileUploadParameters.Reader")
 		}
-		err = postWithMultipartResponse(ctx, api.httpclient, api.endpoint+"files.upload", params.Filename, "file", values, params.Reader, response, api)
+		err = postWithMultipartResponse(ctx, api.httpclient, api.endpoint+"files.upload", params.Filename, "file", api.token, values, params.Reader, response, api)
 	}
 
 	if err != nil {
diff --git a/vendor/github.com/slack-go/slack/go.mod b/vendor/github.com/slack-go/slack/go.mod
index 32fc4b93..e93a8a4a 100644
--- a/vendor/github.com/slack-go/slack/go.mod
+++ b/vendor/github.com/slack-go/slack/go.mod
@@ -9,4 +9,4 @@ require (
 	github.com/stretchr/testify v1.2.2
 )
 
-go 1.13
+go 1.16
diff --git a/vendor/github.com/slack-go/slack/groups.go b/vendor/github.com/slack-go/slack/groups.go
index 4c5793dc..b77f909d 100644
--- a/vendor/github.com/slack-go/slack/groups.go
+++ b/vendor/github.com/slack-go/slack/groups.go
@@ -1,574 +1,7 @@
 package slack
 
-import (
-	"context"
-	"net/url"
-	"strconv"
-)
-
 // Group contains all the information for a group
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
 type Group struct {
 	GroupConversation
 	IsGroup bool `json:"is_group"`
 }
-
-type groupResponseFull struct {
-	Group          Group   `json:"group"`
-	Groups         []Group `json:"groups"`
-	Purpose        string  `json:"purpose"`
-	Topic          string  `json:"topic"`
-	NotInGroup     bool    `json:"not_in_group"`
-	NoOp           bool    `json:"no_op"`
-	AlreadyClosed  bool    `json:"already_closed"`
-	AlreadyOpen    bool    `json:"already_open"`
-	AlreadyInGroup bool    `json:"already_in_group"`
-	Channel        Channel `json:"channel"`
-	History
-	SlackResponse
-}
-
-func (api *Client) groupRequest(ctx context.Context, path string, values url.Values) (*groupResponseFull, error) {
-	response := &groupResponseFull{}
-	err := api.postMethod(ctx, path, values, response)
-	if err != nil {
-		return nil, err
-	}
-
-	return response, response.Err()
-}
-
-// ArchiveGroup archives a private group
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) ArchiveGroup(group string) error {
-	return api.ArchiveGroupContext(context.Background(), group)
-}
-
-// ArchiveGroupContext archives a private group
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) ArchiveGroupContext(ctx context.Context, group string) error {
-	values := url.Values{
-		"token":   {api.token},
-		"channel": {group},
-	}
-
-	_, err := api.groupRequest(ctx, "groups.archive", values)
-	return err
-}
-
-// UnarchiveGroup unarchives a private group
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) UnarchiveGroup(group string) error {
-	return api.UnarchiveGroupContext(context.Background(), group)
-}
-
-// UnarchiveGroupContext unarchives a private group
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) UnarchiveGroupContext(ctx context.Context, group string) error {
-	values := url.Values{
-		"token":   {api.token},
-		"channel": {group},
-	}
-
-	_, err := api.groupRequest(ctx, "groups.unarchive", values)
-	return err
-}
-
-// CreateGroup creates a private group
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) CreateGroup(group string) (*Group, error) {
-	return api.CreateGroupContext(context.Background(), group)
-}
-
-// CreateGroupContext creates a private group
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) CreateGroupContext(ctx context.Context, group string) (*Group, error) {
-	values := url.Values{
-		"token": {api.token},
-		"name":  {group},
-	}
-
-	response, err := api.groupRequest(ctx, "groups.create", values)
-	if err != nil {
-		return nil, err
-	}
-	return &response.Group, nil
-}
-
-// CreateChildGroup creates a new private group archiving the old one
-// This method takes an existing private group and performs the following steps:
-//   1. Renames the existing group (from "example" to "example-archived").
-//   2. Archives the existing group.
-//   3. Creates a new group with the name of the existing group.
-//   4. Adds all members of the existing group to the new group.
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) CreateChildGroup(group string) (*Group, error) {
-	return api.CreateChildGroupContext(context.Background(), group)
-}
-
-// CreateChildGroupContext creates a new private group archiving the old one with a custom context
-// For more information see CreateChildGroup
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) CreateChildGroupContext(ctx context.Context, group string) (*Group, error) {
-	values := url.Values{
-		"token":   {api.token},
-		"channel": {group},
-	}
-
-	response, err := api.groupRequest(ctx, "groups.createChild", values)
-	if err != nil {
-		return nil, err
-	}
-	return &response.Group, nil
-}
-
-// GetGroupHistory fetches all the history for a private group
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) GetGroupHistory(group string, params HistoryParameters) (*History, error) {
-	return api.GetGroupHistoryContext(context.Background(), group, params)
-}
-
-// GetGroupHistoryContext fetches all the history for a private group with a custom context
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) GetGroupHistoryContext(ctx context.Context, group string, params HistoryParameters) (*History, error) {
-	values := url.Values{
-		"token":   {api.token},
-		"channel": {group},
-	}
-	if params.Latest != DEFAULT_HISTORY_LATEST {
-		values.Add("latest", params.Latest)
-	}
-	if params.Oldest != DEFAULT_HISTORY_OLDEST {
-		values.Add("oldest", params.Oldest)
-	}
-	if params.Count != DEFAULT_HISTORY_COUNT {
-		values.Add("count", strconv.Itoa(params.Count))
-	}
-	if params.Inclusive != DEFAULT_HISTORY_INCLUSIVE {
-		if params.Inclusive {
-			values.Add("inclusive", "1")
-		} else {
-			values.Add("inclusive", "0")
-		}
-	}
-	if params.Unreads != DEFAULT_HISTORY_UNREADS {
-		if params.Unreads {
-			values.Add("unreads", "1")
-		} else {
-			values.Add("unreads", "0")
-		}
-	}
-
-	response, err := api.groupRequest(ctx, "groups.history", values)
-	if err != nil {
-		return nil, err
-	}
-	return &response.History, nil
-}
-
-// InviteUserToGroup invites a specific user to a private group
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) InviteUserToGroup(group, user string) (*Group, bool, error) {
-	return api.InviteUserToGroupContext(context.Background(), group, user)
-}
-
-// InviteUserToGroupContext invites a specific user to a private group with a custom context
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) InviteUserToGroupContext(ctx context.Context, group, user string) (*Group, bool, error) {
-	values := url.Values{
-		"token":   {api.token},
-		"channel": {group},
-		"user":    {user},
-	}
-
-	response, err := api.groupRequest(ctx, "groups.invite", values)
-	if err != nil {
-		return nil, false, err
-	}
-	return &response.Group, response.AlreadyInGroup, nil
-}
-
-// LeaveGroup makes authenticated user leave the group
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) LeaveGroup(group string) error {
-	return api.LeaveGroupContext(context.Background(), group)
-}
-
-// LeaveGroupContext makes authenticated user leave the group with a custom context
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) LeaveGroupContext(ctx context.Context, group string) (err error) {
-	values := url.Values{
-		"token":   {api.token},
-		"channel": {group},
-	}
-
-	_, err = api.groupRequest(ctx, "groups.leave", values)
-	return err
-}
-
-// KickUserFromGroup kicks a user from a group
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) KickUserFromGroup(group, user string) error {
-	return api.KickUserFromGroupContext(context.Background(), group, user)
-}
-
-// KickUserFromGroupContext kicks a user from a group with a custom context
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) KickUserFromGroupContext(ctx context.Context, group, user string) (err error) {
-	values := url.Values{
-		"token":   {api.token},
-		"channel": {group},
-		"user":    {user},
-	}
-
-	_, err = api.groupRequest(ctx, "groups.kick", values)
-	return err
-}
-
-// GetGroups retrieves all groups
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) GetGroups(excludeArchived bool) ([]Group, error) {
-	return api.GetGroupsContext(context.Background(), excludeArchived)
-}
-
-// GetGroupsContext retrieves all groups with a custom context
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) GetGroupsContext(ctx context.Context, excludeArchived bool) ([]Group, error) {
-	values := url.Values{
-		"token": {api.token},
-	}
-	if excludeArchived {
-		values.Add("exclude_archived", "1")
-	}
-
-	response, err := api.groupRequest(ctx, "groups.list", values)
-	if err != nil {
-		return nil, err
-	}
-	return response.Groups, nil
-}
-
-// GetGroupInfo retrieves the given group
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) GetGroupInfo(group string) (*Group, error) {
-	return api.GetGroupInfoContext(context.Background(), group)
-}
-
-// GetGroupInfoContext retrieves the given group with a custom context
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) GetGroupInfoContext(ctx context.Context, group string) (*Group, error) {
-	values := url.Values{
-		"token":          {api.token},
-		"channel":        {group},
-		"include_locale": {strconv.FormatBool(true)},
-	}
-
-	response, err := api.groupRequest(ctx, "groups.info", values)
-	if err != nil {
-		return nil, err
-	}
-	return &response.Group, nil
-}
-
-// SetGroupReadMark sets the read mark on a private group
-// Clients should try to avoid making this call too often. When needing to mark a read position, a client should set a
-// timer before making the call. In this way, any further updates needed during the timeout will not generate extra
-// calls (just one per channel). This is useful for when reading scroll-back history, or following a busy live
-// channel. A timeout of 5 seconds is a good starting point. Be sure to flush these calls on shutdown/logout.
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) SetGroupReadMark(group, ts string) error {
-	return api.SetGroupReadMarkContext(context.Background(), group, ts)
-}
-
-// SetGroupReadMarkContext sets the read mark on a private group with a custom context
-// For more details see SetGroupReadMark
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) SetGroupReadMarkContext(ctx context.Context, group, ts string) (err error) {
-	values := url.Values{
-		"token":   {api.token},
-		"channel": {group},
-		"ts":      {ts},
-	}
-
-	_, err = api.groupRequest(ctx, "groups.mark", values)
-	return err
-}
-
-// OpenGroup opens a private group
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) OpenGroup(group string) (bool, bool, error) {
-	return api.OpenGroupContext(context.Background(), group)
-}
-
-// OpenGroupContext opens a private group with a custom context
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) OpenGroupContext(ctx context.Context, group string) (bool, bool, error) {
-	values := url.Values{
-		"token":   {api.token},
-		"channel": {group},
-	}
-
-	response, err := api.groupRequest(ctx, "groups.open", values)
-	if err != nil {
-		return false, false, err
-	}
-	return response.NoOp, response.AlreadyOpen, nil
-}
-
-// RenameGroup renames a group
-// XXX: They return a channel, not a group. What is this crap? :(
-// Inconsistent api it seems.
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) RenameGroup(group, name string) (*Channel, error) {
-	return api.RenameGroupContext(context.Background(), group, name)
-}
-
-// RenameGroupContext renames a group with a custom context
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) RenameGroupContext(ctx context.Context, group, name string) (*Channel, error) {
-	values := url.Values{
-		"token":   {api.token},
-		"channel": {group},
-		"name":    {name},
-	}
-
-	// XXX: the created entry in this call returns a string instead of a number
-	// so I may have to do some workaround to solve it.
-	response, err := api.groupRequest(ctx, "groups.rename", values)
-	if err != nil {
-		return nil, err
-	}
-	return &response.Channel, nil
-}
-
-// SetGroupPurpose sets the group purpose
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) SetGroupPurpose(group, purpose string) (string, error) {
-	return api.SetGroupPurposeContext(context.Background(), group, purpose)
-}
-
-// SetGroupPurposeContext sets the group purpose with a custom context
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) SetGroupPurposeContext(ctx context.Context, group, purpose string) (string, error) {
-	values := url.Values{
-		"token":   {api.token},
-		"channel": {group},
-		"purpose": {purpose},
-	}
-
-	response, err := api.groupRequest(ctx, "groups.setPurpose", values)
-	if err != nil {
-		return "", err
-	}
-	return response.Purpose, nil
-}
-
-// SetGroupTopic sets the group topic
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) SetGroupTopic(group, topic string) (string, error) {
-	return api.SetGroupTopicContext(context.Background(), group, topic)
-}
-
-// SetGroupTopicContext sets the group topic with a custom context
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) SetGroupTopicContext(ctx context.Context, group, topic string) (string, error) {
-	values := url.Values{
-		"token":   {api.token},
-		"channel": {group},
-		"topic":   {topic},
-	}
-
-	response, err := api.groupRequest(ctx, "groups.setTopic", values)
-	if err != nil {
-		return "", err
-	}
-	return response.Topic, nil
-}
-
-// GetGroupReplies gets an entire thread (a message plus all the messages in reply to it).
-// see https://api.slack.com/methods/groups.replies
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) GetGroupReplies(channelID, thread_ts string) ([]Message, error) {
-	return api.GetGroupRepliesContext(context.Background(), channelID, thread_ts)
-}
-
-// GetGroupRepliesContext gets an entire thread (a message plus all the messages in reply to it) with a custom context
-// see https://api.slack.com/methods/groups.replies
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) GetGroupRepliesContext(ctx context.Context, channelID, thread_ts string) ([]Message, error) {
-	values := url.Values{
-		"token":     {api.token},
-		"channel":   {channelID},
-		"thread_ts": {thread_ts},
-	}
-	response, err := api.groupRequest(ctx, "groups.replies", values)
-	if err != nil {
-		return nil, err
-	}
-	return response.History.Messages, nil
-}
diff --git a/vendor/github.com/slack-go/slack/im.go b/vendor/github.com/slack-go/slack/im.go
index a884b295..7c4bc257 100644
--- a/vendor/github.com/slack-go/slack/im.go
+++ b/vendor/github.com/slack-go/slack/im.go
@@ -1,11 +1,5 @@
 package slack
 
-import (
-	"context"
-	"net/url"
-	"strconv"
-)
-
 type imChannel struct {
 	ID string `json:"id"`
 }
@@ -21,200 +15,7 @@ type imResponseFull struct {
 }
 
 // IM contains information related to the Direct Message channel
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
 type IM struct {
 	Conversation
 	IsUserDeleted bool `json:"is_user_deleted"`
 }
-
-func (api *Client) imRequest(ctx context.Context, path string, values url.Values) (*imResponseFull, error) {
-	response := &imResponseFull{}
-	err := api.postMethod(ctx, path, values, response)
-	if err != nil {
-		return nil, err
-	}
-
-	return response, response.Err()
-}
-
-// CloseIMChannel closes the direct message channel
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) CloseIMChannel(channel string) (bool, bool, error) {
-	return api.CloseIMChannelContext(context.Background(), channel)
-}
-
-// CloseIMChannelContext closes the direct message channel with a custom context
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) CloseIMChannelContext(ctx context.Context, channel string) (bool, bool, error) {
-	values := url.Values{
-		"token":   {api.token},
-		"channel": {channel},
-	}
-
-	response, err := api.imRequest(ctx, "im.close", values)
-	if err != nil {
-		return false, false, err
-	}
-	return response.NoOp, response.AlreadyClosed, nil
-}
-
-// OpenIMChannel opens a direct message channel to the user provided as argument
-// Returns some status and the channel ID
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) OpenIMChannel(user string) (bool, bool, string, error) {
-	return api.OpenIMChannelContext(context.Background(), user)
-}
-
-// OpenIMChannelContext opens a direct message channel to the user provided as argument with a custom context
-// Returns some status and the channel ID
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) OpenIMChannelContext(ctx context.Context, user string) (bool, bool, string, error) {
-	values := url.Values{
-		"token": {api.token},
-		"user":  {user},
-	}
-
-	response, err := api.imRequest(ctx, "im.open", values)
-	if err != nil {
-		return false, false, "", err
-	}
-	return response.NoOp, response.AlreadyOpen, response.Channel.ID, nil
-}
-
-// MarkIMChannel sets the read mark of a direct message channel to a specific point
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) MarkIMChannel(channel, ts string) (err error) {
-	return api.MarkIMChannelContext(context.Background(), channel, ts)
-}
-
-// MarkIMChannelContext sets the read mark of a direct message channel to a specific point with a custom context
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) MarkIMChannelContext(ctx context.Context, channel, ts string) error {
-	values := url.Values{
-		"token":   {api.token},
-		"channel": {channel},
-		"ts":      {ts},
-	}
-
-	_, err := api.imRequest(ctx, "im.mark", values)
-	return err
-}
-
-// GetIMHistory retrieves the direct message channel history
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) GetIMHistory(channel string, params HistoryParameters) (*History, error) {
-	return api.GetIMHistoryContext(context.Background(), channel, params)
-}
-
-// GetIMHistoryContext retrieves the direct message channel history with a custom context
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) GetIMHistoryContext(ctx context.Context, channel string, params HistoryParameters) (*History, error) {
-	values := url.Values{
-		"token":   {api.token},
-		"channel": {channel},
-	}
-	if params.Latest != DEFAULT_HISTORY_LATEST {
-		values.Add("latest", params.Latest)
-	}
-	if params.Oldest != DEFAULT_HISTORY_OLDEST {
-		values.Add("oldest", params.Oldest)
-	}
-	if params.Count != DEFAULT_HISTORY_COUNT {
-		values.Add("count", strconv.Itoa(params.Count))
-	}
-	if params.Inclusive != DEFAULT_HISTORY_INCLUSIVE {
-		if params.Inclusive {
-			values.Add("inclusive", "1")
-		} else {
-			values.Add("inclusive", "0")
-		}
-	}
-	if params.Unreads != DEFAULT_HISTORY_UNREADS {
-		if params.Unreads {
-			values.Add("unreads", "1")
-		} else {
-			values.Add("unreads", "0")
-		}
-	}
-
-	response, err := api.imRequest(ctx, "im.history", values)
-	if err != nil {
-		return nil, err
-	}
-	return &response.History, nil
-}
-
-// GetIMChannels returns the list of direct message channels
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) GetIMChannels() ([]IM, error) {
-	return api.GetIMChannelsContext(context.Background())
-}
-
-// GetIMChannelsContext returns the list of direct message channels with a custom context
-//
-// Deprecated: channels.*, groups.* im.* and mpim.* methods will be deprecated in the next version.
-// In Slack, these API are no longer available for  newly Apps created after June 10th, 2020.
-// Also, existing applications will not be able to use these APIs after February 24th, 2021.
-//
-// See also: https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api
-func (api *Client) GetIMChannelsContext(ctx context.Context) ([]IM, error) {
-	values := url.Values{
-		"token": {api.token},
-	}
-
-	response, err := api.imRequest(ctx, "im.list", values)
-	if err != nil {
-		return nil, err
-	}
-	return response.IMs, nil
-}
diff --git a/vendor/github.com/slack-go/slack/info.go b/vendor/github.com/slack-go/slack/info.go
index ec706240..16fa667b 100644
--- a/vendor/github.com/slack-go/slack/info.go
+++ b/vendor/github.com/slack-go/slack/info.go
@@ -321,10 +321,9 @@ type UserPrefs struct {
 }
 
 func (api *Client) GetUserPrefs() (*UserPrefsCarrier, error) {
-	values := url.Values{"token": {api.token}}
 	response := UserPrefsCarrier{}
 
-	err := api.getMethod(context.Background(), "users.prefs.get", values, &response)
+	err := api.getMethod(context.Background(), "users.prefs.get", api.token, url.Values{}, &response)
 	if err != nil {
 		return nil, err
 	}
diff --git a/vendor/github.com/slack-go/slack/interactions.go b/vendor/github.com/slack-go/slack/interactions.go
index 2515e290..60d74704 100644
--- a/vendor/github.com/slack-go/slack/interactions.go
+++ b/vendor/github.com/slack-go/slack/interactions.go
@@ -9,11 +9,11 @@ import (
 type InteractionType string
 
 // ActionType type represents the type of action (attachment, block, etc.)
-type actionType string
+type ActionType string
 
 // action is an interface that should be implemented by all callback action types
 type action interface {
-	actionType() actionType
+	actionType() ActionType
 }
 
 // Types of interactions that can be received.
diff --git a/vendor/github.com/slack-go/slack/misc.go b/vendor/github.com/slack-go/slack/misc.go
index 821bda86..8c50305b 100644
--- a/vendor/github.com/slack-go/slack/misc.go
+++ b/vendor/github.com/slack-go/slack/misc.go
@@ -135,7 +135,7 @@ func parseResponseBody(body io.ReadCloser, intf interface{}, d Debug) error {
 	return json.Unmarshal(response, intf)
 }
 
-func postLocalWithMultipartResponse(ctx context.Context, client httpClient, method, fpath, fieldname string, values url.Values, intf interface{}, d Debug) error {
+func postLocalWithMultipartResponse(ctx context.Context, client httpClient, method, fpath, fieldname, token string, values url.Values, intf interface{}, d Debug) error {
 	fullpath, err := filepath.Abs(fpath)
 	if err != nil {
 		return err
@@ -146,10 +146,10 @@ func postLocalWithMultipartResponse(ctx context.Context, client httpClient, meth
 	}
 	defer file.Close()
 
-	return postWithMultipartResponse(ctx, client, method, filepath.Base(fpath), fieldname, values, file, intf, d)
+	return postWithMultipartResponse(ctx, client, method, filepath.Base(fpath), fieldname, token, values, file, intf, d)
 }
 
-func postWithMultipartResponse(ctx context.Context, client httpClient, path, name, fieldname string, values url.Values, r io.Reader, intf interface{}, d Debug) error {
+func postWithMultipartResponse(ctx context.Context, client httpClient, path, name, fieldname, token string, values url.Values, r io.Reader, intf interface{}, d Debug) error {
 	pipeReader, pipeWriter := io.Pipe()
 	wr := multipart.NewWriter(pipeWriter)
 	errc := make(chan error)
@@ -175,6 +175,7 @@ func postWithMultipartResponse(ctx context.Context, client httpClient, path, nam
 		return err
 	}
 	req.Header.Add("Content-Type", wr.FormDataContentType())
+	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", token))
 	req = req.WithContext(ctx)
 	resp, err := client.Do(req)
 
@@ -236,12 +237,14 @@ func postForm(ctx context.Context, client httpClient, endpoint string, values ur
 	return doPost(ctx, client, req, newJSONParser(intf), d)
 }
 
-func getResource(ctx context.Context, client httpClient, endpoint string, values url.Values, intf interface{}, d Debug) error {
+func getResource(ctx context.Context, client httpClient, endpoint, token string, values url.Values, intf interface{}, d Debug) error {
 	req, err := http.NewRequest("GET", endpoint, nil)
 	if err != nil {
 		return err
 	}
 	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", token))
+
 	req.URL.RawQuery = values.Encode()
 
 	return doPost(ctx, client, req, newJSONParser(intf), d)
diff --git a/vendor/github.com/slack-go/slack/slack.go b/vendor/github.com/slack-go/slack/slack.go
index 14367365..ea3aab6d 100644
--- a/vendor/github.com/slack-go/slack/slack.go
+++ b/vendor/github.com/slack-go/slack/slack.go
@@ -157,6 +157,6 @@ func (api *Client) postMethod(ctx context.Context, path string, values url.Value
 }
 
 // get a slack web method.
-func (api *Client) getMethod(ctx context.Context, path string, values url.Values, intf interface{}) error {
-	return getResource(ctx, api.httpclient, api.endpoint+path, values, intf, api)
+func (api *Client) getMethod(ctx context.Context, path string, token string, values url.Values, intf interface{}) error {
+	return getResource(ctx, api.httpclient, api.endpoint+path, token, values, intf, api)
 }
diff --git a/vendor/github.com/slack-go/slack/users.go b/vendor/github.com/slack-go/slack/users.go
index 82657d76..3696e37f 100644
--- a/vendor/github.com/slack-go/slack/users.go
+++ b/vendor/github.com/slack-go/slack/users.go
@@ -482,7 +482,7 @@ func (api *Client) SetUserPhotoContext(ctx context.Context, image string, params
 		values.Add("crop_w", strconv.Itoa(params.CropW))
 	}
 
-	err = postLocalWithMultipartResponse(ctx, api.httpclient, api.endpoint+"users.setPhoto", image, "image", values, response, api)
+	err = postLocalWithMultipartResponse(ctx, api.httpclient, api.endpoint+"users.setPhoto", image, "image", api.token, values, response, api)
 	if err != nil {
 		return err
 	}
@@ -632,9 +632,15 @@ func (api *Client) UnsetUserCustomStatusContext(ctx context.Context) error {
 	return api.SetUserCustomStatusContext(ctx, "", "", 0)
 }
 
+// GetUserProfileParameters are the parameters required to get user profile
+type GetUserProfileParameters struct {
+	UserID        string
+	IncludeLabels bool
+}
+
 // GetUserProfile retrieves a user's profile information.
-func (api *Client) GetUserProfile(userID string, includeLabels bool) (*UserProfile, error) {
-	return api.GetUserProfileContext(context.Background(), userID, includeLabels)
+func (api *Client) GetUserProfile(params *GetUserProfileParameters) (*UserProfile, error) {
+	return api.GetUserProfileContext(context.Background(), params)
 }
 
 type getUserProfileResponse struct {
@@ -643,13 +649,14 @@ type getUserProfileResponse struct {
 }
 
 // GetUserProfileContext retrieves a user's profile information with a context.
-func (api *Client) GetUserProfileContext(ctx context.Context, userID string, includeLabels bool) (*UserProfile, error) {
+func (api *Client) GetUserProfileContext(ctx context.Context, params *GetUserProfileParameters) (*UserProfile, error) {
 	values := url.Values{"token": {api.token}}
-	if includeLabels {
-		values.Add("include_labels", "true")
+
+	if params.UserID != "" {
+		values.Add("user", params.UserID)
 	}
-	if userID != "" {
-		values.Add("user", userID)
+	if params.IncludeLabels {
+		values.Add("include_labels", "true")
 	}
 	resp := &getUserProfileResponse{}
 
diff --git a/vendor/golang.org/x/text/encoding/simplifiedchinese/hzgb2312.go b/vendor/golang.org/x/text/encoding/simplifiedchinese/hzgb2312.go
index eb3157f0..e15b7bf6 100644
--- a/vendor/golang.org/x/text/encoding/simplifiedchinese/hzgb2312.go
+++ b/vendor/golang.org/x/text/encoding/simplifiedchinese/hzgb2312.go
@@ -57,7 +57,7 @@ loop:
 					err = transform.ErrShortSrc
 					break loop
 				}
-				r = utf8.RuneError
+				r, size = utf8.RuneError, 1
 				goto write
 			}
 			size = 2
diff --git a/vendor/golang.org/x/text/internal/language/parse.go b/vendor/golang.org/x/text/internal/language/parse.go
index 2be83e1d..a2fdad89 100644
--- a/vendor/golang.org/x/text/internal/language/parse.go
+++ b/vendor/golang.org/x/text/internal/language/parse.go
@@ -133,14 +133,15 @@ func (s *scanner) resizeRange(oldStart, oldEnd, newSize int) {
 	s.start = oldStart
 	if end := oldStart + newSize; end != oldEnd {
 		diff := end - oldEnd
-		if end < cap(s.b) {
-			b := make([]byte, len(s.b)+diff)
+		var b []byte
+		if n := len(s.b) + diff; n > cap(s.b) {
+			b = make([]byte, n)
 			copy(b, s.b[:oldStart])
-			copy(b[end:], s.b[oldEnd:])
-			s.b = b
 		} else {
-			s.b = append(s.b[end:], s.b[oldEnd:]...)
+			b = s.b[:n:n]
 		}
+		copy(b[end:], s.b[oldEnd:])
+		s.b = b
 		s.next = end + (s.next - s.end)
 		s.end = end
 	}
diff --git a/vendor/golang.org/x/text/unicode/bidi/bidi.go b/vendor/golang.org/x/text/unicode/bidi/bidi.go
index e8edc54c..fd057601 100644
--- a/vendor/golang.org/x/text/unicode/bidi/bidi.go
+++ b/vendor/golang.org/x/text/unicode/bidi/bidi.go
@@ -12,15 +12,14 @@
 // and without notice.
 package bidi // import "golang.org/x/text/unicode/bidi"
 
-// TODO:
-// The following functionality would not be hard to implement, but hinges on
-// the definition of a Segmenter interface. For now this is up to the user.
-// - Iterate over paragraphs
-// - Segmenter to iterate over runs directly from a given text.
-// Also:
+// TODO
 // - Transformer for reordering?
 // - Transformer (validator, really) for Bidi Rule.
 
+import (
+	"bytes"
+)
+
 // This API tries to avoid dealing with embedding levels for now. Under the hood
 // these will be computed, but the question is to which extent the user should
 // know they exist. We should at some point allow the user to specify an
@@ -49,7 +48,9 @@ const (
 	Neutral
 )
 
-type options struct{}
+type options struct {
+	defaultDirection Direction
+}
 
 // An Option is an option for Bidi processing.
 type Option func(*options)
@@ -66,12 +67,62 @@ type Option func(*options)
 // DefaultDirection sets the default direction for a Paragraph. The direction is
 // overridden if the text contains directional characters.
 func DefaultDirection(d Direction) Option {
-	panic("unimplemented")
+	return func(opts *options) {
+		opts.defaultDirection = d
+	}
 }
 
 // A Paragraph holds a single Paragraph for Bidi processing.
 type Paragraph struct {
-	// buffers
+	p          []byte
+	o          Ordering
+	opts       []Option
+	types      []Class
+	pairTypes  []bracketType
+	pairValues []rune
+	runes      []rune
+	options    options
+}
+
+// Initialize the p.pairTypes, p.pairValues and p.types from the input previously
+// set by p.SetBytes() or p.SetString(). Also limit the input up to (and including) a paragraph
+// separator (bidi class B).
+//
+// The function p.Order() needs these values to be set, so this preparation could be postponed.
+// But since the SetBytes and SetStrings functions return the length of the input up to the paragraph
+// separator, the whole input needs to be processed anyway and should not be done twice.
+//
+// The function has the same return values as SetBytes() / SetString()
+func (p *Paragraph) prepareInput() (n int, err error) {
+	p.runes = bytes.Runes(p.p)
+	bytecount := 0
+	// clear slices from previous SetString or SetBytes
+	p.pairTypes = nil
+	p.pairValues = nil
+	p.types = nil
+
+	for _, r := range p.runes {
+		props, i := LookupRune(r)
+		bytecount += i
+		cls := props.Class()
+		if cls == B {
+			return bytecount, nil
+		}
+		p.types = append(p.types, cls)
+		if props.IsOpeningBracket() {
+			p.pairTypes = append(p.pairTypes, bpOpen)
+			p.pairValues = append(p.pairValues, r)
+		} else if props.IsBracket() {
+			// this must be a closing bracket,
+			// since IsOpeningBracket is not true
+			p.pairTypes = append(p.pairTypes, bpClose)
+			p.pairValues = append(p.pairValues, r)
+		} else {
+			p.pairTypes = append(p.pairTypes, bpNone)
+			p.pairValues = append(p.pairValues, 0)
+		}
+	}
+	return bytecount, nil
 }
 
 // SetBytes configures p for the given paragraph text. It replaces text
@@ -80,70 +131,150 @@ type Paragraph struct {
 // consumed from b including this separator. Error may be non-nil if options are
 // given.
 func (p *Paragraph) SetBytes(b []byte, opts ...Option) (n int, err error) {
-	panic("unimplemented")
+	p.p = b
+	p.opts = opts
+	return p.prepareInput()
 }
 
-// SetString configures p for the given paragraph text. It replaces text
-// previously set by SetBytes or SetString. If b contains a paragraph separator
+// SetString configures s for the given paragraph text. It replaces text
+// previously set by SetBytes or SetString. If s contains a paragraph separator
 // it will only process the first paragraph and report the number of bytes
-// consumed from b including this separator. Error may be non-nil if options are
+// consumed from s including this separator. Error may be non-nil if options are
 // given.
 func (p *Paragraph) SetString(s string, opts ...Option) (n int, err error) {
-	panic("unimplemented")
+	p.p = []byte(s)
+	p.opts = opts
+	return p.prepareInput()
 }
 
 // IsLeftToRight reports whether the principle direction of rendering for this
 // paragraphs is left-to-right. If this returns false, the principle direction
 // of rendering is right-to-left.
 func (p *Paragraph) IsLeftToRight() bool {
-	panic("unimplemented")
+	return p.Direction() == LeftToRight
 }
 
 // Direction returns the direction of the text of this paragraph.
 //
 // The direction may be LeftToRight, RightToLeft, Mixed, or Neutral.
 func (p *Paragraph) Direction() Direction {
-	panic("unimplemented")
+	return p.o.Direction()
 }
 
+// TODO: what happens if the position is > len(input)? This should return an error.
+
 // RunAt reports the Run at the given position of the input text.
 //
 // This method can be used for computing line breaks on paragraphs.
 func (p *Paragraph) RunAt(pos int) Run {
-	panic("unimplemented")
+	c := 0
+	runNumber := 0
+	for i, r := range p.o.runes {
+		c += len(r)
+		if pos < c {
+			runNumber = i
+		}
+	}
+	return p.o.Run(runNumber)
+}
+
+func calculateOrdering(levels []level, runes []rune) Ordering {
+	var curDir Direction
+
+	prevDir := Neutral
+	prevI := 0
+
+	o := Ordering{}
+	// lvl = 0,2,4,...: left to right
+	// lvl = 1,3,5,...: right to left
+	for i, lvl := range levels {
+		if lvl%2 == 0 {
+			curDir = LeftToRight
+		} else {
+			curDir = RightToLeft
+		}
+		if curDir != prevDir {
+			if i > 0 {
+				o.runes = append(o.runes, runes[prevI:i])
+				o.directions = append(o.directions, prevDir)
+				o.startpos = append(o.startpos, prevI)
+			}
+			prevI = i
+			prevDir = curDir
+		}
+	}
+	o.runes = append(o.runes, runes[prevI:])
+	o.directions = append(o.directions, prevDir)
+	o.startpos = append(o.startpos, prevI)
+	return o
 }
 
 // Order computes the visual ordering of all the runs in a Paragraph.
 func (p *Paragraph) Order() (Ordering, error) {
-	panic("unimplemented")
+	if len(p.types) == 0 {
+		return Ordering{}, nil
+	}
+
+	for _, fn := range p.opts {
+		fn(&p.options)
+	}
+	lvl := level(-1)
+	if p.options.defaultDirection == RightToLeft {
+		lvl = 1
+	}
+	para, err := newParagraph(p.types, p.pairTypes, p.pairValues, lvl)
+	if err != nil {
+		return Ordering{}, err
+	}
+
+	levels := para.getLevels([]int{len(p.types)})
+
+	p.o = calculateOrdering(levels, p.runes)
+	return p.o, nil
 }
 
 // Line computes the visual ordering of runs for a single line starting and
 // ending at the given positions in the original text.
 func (p *Paragraph) Line(start, end int) (Ordering, error) {
-	panic("unimplemented")
+	lineTypes := p.types[start:end]
+	para, err := newParagraph(lineTypes, p.pairTypes[start:end], p.pairValues[start:end], -1)
+	if err != nil {
+		return Ordering{}, err
+	}
+	levels := para.getLevels([]int{len(lineTypes)})
+	o := calculateOrdering(levels, p.runes[start:end])
+	return o, nil
 }
 
 // An Ordering holds the computed visual order of runs of a Paragraph. Calling
 // SetBytes or SetString on the originating Paragraph invalidates an Ordering.
 // The methods of an Ordering should only be called by one goroutine at a time.
-type Ordering struct{}
+type Ordering struct {
+	runes      [][]rune
+	directions []Direction
+	startpos   []int
+}
 
 // Direction reports the directionality of the runs.
 //
 // The direction may be LeftToRight, RightToLeft, Mixed, or Neutral.
 func (o *Ordering) Direction() Direction {
-	panic("unimplemented")
+	return o.directions[0]
 }
 
 // NumRuns returns the number of runs.
 func (o *Ordering) NumRuns() int {
-	panic("unimplemented")
+	return len(o.runes)
 }
 
 // Run returns the ith run within the ordering.
 func (o *Ordering) Run(i int) Run {
-	panic("unimplemented")
+	r := Run{
+		runes:     o.runes[i],
+		direction: o.directions[i],
+		startpos:  o.startpos[i],
+	}
+	return r
 }
 
 // TODO: perhaps with options.
@@ -155,16 +286,19 @@ func (o *Ordering) Run(i int) Run {
 
 // A Run is a continuous sequence of characters of a single direction.
 type Run struct {
+	runes     []rune
+	direction Direction
+	startpos  int
 }
 
 // String returns the text of the run in its original order.
 func (r *Run) String() string {
-	panic("unimplemented")
+	return string(r.runes)
 }
 
 // Bytes returns the text of the run in its original order.
 func (r *Run) Bytes() []byte {
-	panic("unimplemented")
+	return []byte(r.String())
 }
 
 // TODO: methods for
@@ -174,25 +308,52 @@ func (r *Run) Bytes() []byte {
 
 // Direction reports the direction of the run.
 func (r *Run) Direction() Direction {
-	panic("unimplemented")
+	return r.direction
 }
 
-// Position of the Run within the text passed to SetBytes or SetString of the
+// Pos returns the position of the Run within the text passed to SetBytes or SetString of the
 // originating Paragraph value.
 func (r *Run) Pos() (start, end int) {
-	panic("unimplemented")
+	return r.startpos, r.startpos + len(r.runes) - 1
 }
 
 // AppendReverse reverses the order of characters of in, appends them to out,
 // and returns the result. Modifiers will still follow the runes they modify.
 // Brackets are replaced with their counterparts.
 func AppendReverse(out, in []byte) []byte {
-	panic("unimplemented")
+	ret := make([]byte, len(in)+len(out))
+	copy(ret, out)
+	inRunes := bytes.Runes(in)
+
+	for i, r := range inRunes {
+		prop, _ := LookupRune(r)
+		if prop.IsBracket() {
+			inRunes[i] = prop.reverseBracket(r)
+		}
+	}
+
+	for i, j := 0, len(inRunes)-1; i < j; i, j = i+1, j-1 {
+		inRunes[i], inRunes[j] = inRunes[j], inRunes[i]
+	}
+	copy(ret[len(out):], string(inRunes))
+
+	return ret
 }
 
 // ReverseString reverses the order of characters in s and returns a new string.
 // Modifiers will still follow the runes they modify. Brackets are replaced with
 // their counterparts.
 func ReverseString(s string) string {
-	panic("unimplemented")
+	input := []rune(s)
+	li := len(input)
+	ret := make([]rune, li)
+	for i, r := range input {
+		prop, _ := LookupRune(r)
+		if prop.IsBracket() {
+			ret[li-i-1] = prop.reverseBracket(r)
+		} else {
+			ret[li-i-1] = r
+		}
+	}
+	return string(ret)
 }
diff --git a/vendor/golang.org/x/text/unicode/bidi/core.go b/vendor/golang.org/x/text/unicode/bidi/core.go
index 50deb660..e4c08110 100644
--- a/vendor/golang.org/x/text/unicode/bidi/core.go
+++ b/vendor/golang.org/x/text/unicode/bidi/core.go
@@ -4,7 +4,10 @@
 
 package bidi
 
-import "log"
+import (
+	"fmt"
+	"log"
+)
 
 // This implementation is a port based on the reference implementation found at:
 // https://www.unicode.org/Public/PROGRAMS/BidiReferenceJava/
@@ -97,13 +100,20 @@ type paragraph struct {
 // rune (suggested is the rune of the open bracket for opening and matching
 // close brackets, after normalization). The embedding levels are optional, but
 // may be supplied to encode embedding levels of styled text.
-//
-// TODO: return an error.
-func newParagraph(types []Class, pairTypes []bracketType, pairValues []rune, levels level) *paragraph {
-	validateTypes(types)
-	validatePbTypes(pairTypes)
-	validatePbValues(pairValues, pairTypes)
-	validateParagraphEmbeddingLevel(levels)
+func newParagraph(types []Class, pairTypes []bracketType, pairValues []rune, levels level) (*paragraph, error) {
+	var err error
+	if err = validateTypes(types); err != nil {
+		return nil, err
+	}
+	if err = validatePbTypes(pairTypes); err != nil {
+		return nil, err
+	}
+	if err = validatePbValues(pairValues, pairTypes); err != nil {
+		return nil, err
+	}
+	if err = validateParagraphEmbeddingLevel(levels); err != nil {
+		return nil, err
+	}
 
 	p := &paragraph{
 		initialTypes:   append([]Class(nil), types...),
@@ -115,7 +125,7 @@ func newParagraph(types []Class, pairTypes []bracketType, pairValues []rune, lev
 		resultTypes: append([]Class(nil), types...),
 	}
 	p.run()
-	return p
+	return p, nil
 }
 
 func (p *paragraph) Len() int { return len(p.initialTypes) }
@@ -1001,58 +1011,61 @@ func typeForLevel(level level) Class {
 	return R
 }
 
-// TODO: change validation to not panic
-
-func validateTypes(types []Class) {
+func validateTypes(types []Class) error {
 	if len(types) == 0 {
-		log.Panic("types is null")
+		return fmt.Errorf("types is null")
 	}
 	for i, t := range types[:len(types)-1] {
 		if t == B {
-			log.Panicf("B type before end of paragraph at index: %d", i)
+			return fmt.Errorf("B type before end of paragraph at index: %d", i)
 		}
 	}
+	return nil
 }
 
-func validateParagraphEmbeddingLevel(embeddingLevel level) {
+func validateParagraphEmbeddingLevel(embeddingLevel level) error {
 	if embeddingLevel != implicitLevel &&
 		embeddingLevel != 0 &&
 		embeddingLevel != 1 {
-		log.Panicf("illegal paragraph embedding level: %d", embeddingLevel)
+		return fmt.Errorf("illegal paragraph embedding level: %d", embeddingLevel)
 	}
+	return nil
 }
 
-func validateLineBreaks(linebreaks []int, textLength int) {
+func validateLineBreaks(linebreaks []int, textLength int) error {
 	prev := 0
 	for i, next := range linebreaks {
 		if next <= prev {
-			log.Panicf("bad linebreak: %d at index: %d", next, i)
+			return fmt.Errorf("bad linebreak: %d at index: %d", next, i)
 		}
 		prev = next
 	}
 	if prev != textLength {
-		log.Panicf("last linebreak was %d, want %d", prev, textLength)
+		return fmt.Errorf("last linebreak was %d, want %d", prev, textLength)
 	}
+	return nil
 }
 
-func validatePbTypes(pairTypes []bracketType) {
+func validatePbTypes(pairTypes []bracketType) error {
 	if len(pairTypes) == 0 {
-		log.Panic("pairTypes is null")
+		return fmt.Errorf("pairTypes is null")
 	}
 	for i, pt := range pairTypes {
 		switch pt {
 		case bpNone, bpOpen, bpClose:
 		default:
-			log.Panicf("illegal pairType value at %d: %v", i, pairTypes[i])
+			return fmt.Errorf("illegal pairType value at %d: %v", i, pairTypes[i])
 		}
 	}
+	return nil
 }
 
-func validatePbValues(pairValues []rune, pairTypes []bracketType) {
+func validatePbValues(pairValues []rune, pairTypes []bracketType) error {
 	if pairValues == nil {
-		log.Panic("pairValues is null")
+		return fmt.Errorf("pairValues is null")
 	}
 	if len(pairTypes) != len(pairValues) {
-		log.Panic("pairTypes is different length from pairValues")
+		return fmt.Errorf("pairTypes is different length from pairValues")
 	}
+	return nil
 }
diff --git a/vendor/modules.txt b/vendor/modules.txt
index d83d4732..b94a1791 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -28,7 +28,7 @@ github.com/Rhymen/go-whatsapp/binary/token
 github.com/Rhymen/go-whatsapp/crypto/cbc
 github.com/Rhymen/go-whatsapp/crypto/curve25519
 github.com/Rhymen/go-whatsapp/crypto/hkdf
-# github.com/SevereCloud/vksdk/v2 v2.9.0
+# github.com/SevereCloud/vksdk/v2 v2.9.1
 ## explicit
 github.com/SevereCloud/vksdk/v2
 github.com/SevereCloud/vksdk/v2/api
@@ -67,13 +67,13 @@ github.com/go-telegram-bot-api/telegram-bot-api
 # github.com/golang/protobuf v1.4.2
 github.com/golang/protobuf/proto
 github.com/golang/protobuf/protoc-gen-go/descriptor
-# github.com/gomarkdown/markdown v0.0.0-20210208175418-bda154fe17d8
+# github.com/gomarkdown/markdown v0.0.0-20210408062403-ad838ccf8cdd
 ## explicit
 github.com/gomarkdown/markdown
 github.com/gomarkdown/markdown/ast
 github.com/gomarkdown/markdown/html
 github.com/gomarkdown/markdown/parser
-# github.com/google/gops v0.3.17
+# github.com/google/gops v0.3.18
 ## explicit
 github.com/google/gops/agent
 github.com/google/gops/internal
@@ -121,7 +121,7 @@ github.com/keybase/go-keybase-chat-bot/kbchat/types/stellar1
 # github.com/kyokomi/emoji/v2 v2.2.8
 ## explicit
 github.com/kyokomi/emoji/v2
-# github.com/labstack/echo/v4 v4.2.1
+# github.com/labstack/echo/v4 v4.2.2
 ## explicit
 github.com/labstack/echo/v4
 github.com/labstack/echo/v4/middleware
@@ -242,7 +242,7 @@ github.com/sirupsen/logrus
 github.com/skip2/go-qrcode
 github.com/skip2/go-qrcode/bitset
 github.com/skip2/go-qrcode/reedsolomon
-# github.com/slack-go/slack v0.8.2
+# github.com/slack-go/slack v0.9.0
 ## explicit
 github.com/slack-go/slack
 github.com/slack-go/slack/internal/backoff
@@ -352,7 +352,7 @@ golang.org/x/net/http2/h2c
 golang.org/x/net/http2/hpack
 golang.org/x/net/idna
 golang.org/x/net/websocket
-# golang.org/x/oauth2 v0.0.0-20210402161424-2e8d93401602
+# golang.org/x/oauth2 v0.0.0-20210427180440-81ed05c6b58c
 ## explicit
 golang.org/x/oauth2
 golang.org/x/oauth2/clientcredentials
@@ -363,7 +363,7 @@ golang.org/x/sys/cpu
 golang.org/x/sys/internal/unsafeheader
 golang.org/x/sys/unix
 golang.org/x/sys/windows
-# golang.org/x/text v0.3.4
+# golang.org/x/text v0.3.5
 golang.org/x/text/encoding
 golang.org/x/text/encoding/charmap
 golang.org/x/text/encoding/internal
-- 
cgit v1.2.3