Update vendor for next release (#1343)

15 files changed, 599 insertions, 77 deletions

diff --git a/vendor/github.com/slack-go/slack/.golangci.yml b/vendor/github.com/slack-go/slack/.golangci.yml
new file mode 100644
index 00000000..c16f5389
--- /dev/null
+++ b/vendor/github.com/slack-go/slack/.golangci.yml
@@ -0,0 +1,14 @@
+run:
+  timeout: 6m
+  issues-exit-code: 1
+linters:
+  disable-all: true
+  enable:
+    - goimports
+    - govet
+    - interfacer
+    - misspell
+    - structcheck
+    - unconvert
+issues:
+  new: true
diff --git a/vendor/github.com/slack-go/slack/.travis.yml b/vendor/github.com/slack-go/slack/.travis.yml
deleted file mode 100644
index f2019d72..00000000
--- a/vendor/github.com/slack-go/slack/.travis.yml
+++ /dev/null
@@ -1,41 +0,0 @@
-language: go
-
-env:
-  - GO111MODULE=on
-
-install: true
-
-before_install:
-  - export PATH=$HOME/gopath/bin:$PATH
-  # install gometalinter
-  - curl -L https://git.io/vp6lP | sh
-
-script:
-  - PATH=$PWD/bin:$PATH gometalinter ./...
-  - go test -race -cover ./...
-
-matrix:
-  allow_failures:
-    - go: tip
-  include:
-  - go: "1.7.x"
-    script:  go test -v ./...
-  - go: "1.8.x"
-    script:  go test -v ./...
-  - go: "1.9.x"
-    script:  go test -v ./...
-  - go: "1.10.x"
-    script:  go test -v ./...
-  - go: "1.11.x"
-    script: go test -v -mod=vendor ./...
-  - go: "1.12.x"
-    script: go test -v -mod=vendor ./...
-  - go: "1.13.x"
-    script: go test -v -mod=vendor ./...
-  - go: "1.14.x"
-    script: go test -v -mod=vendor ./...
-  - go: "tip"
-    script: go test -v -mod=vendor ./...
-
-git:
-  depth: 10
diff --git a/vendor/github.com/slack-go/slack/attachments.go b/vendor/github.com/slack-go/slack/attachments.go
index 5f388e9f..b5b79f9f 100644
--- a/vendor/github.com/slack-go/slack/attachments.go
+++ b/vendor/github.com/slack-go/slack/attachments.go
@@ -75,7 +75,7 @@ type Attachment struct {
 	Title     string `json:"title,omitempty"`
 	TitleLink string `json:"title_link,omitempty"`
 	Pretext   string `json:"pretext,omitempty"`
-	Text      string `json:"text"` // Required
+	Text      string `json:"text,omitempty"`
 
 	ImageURL string `json:"image_url,omitempty"`
 	ThumbURL string `json:"thumb_url,omitempty"`
diff --git a/vendor/github.com/slack-go/slack/block_action.go b/vendor/github.com/slack-go/slack/block_action.go
index fe46a95c..c15e4a3f 100644
--- a/vendor/github.com/slack-go/slack/block_action.go
+++ b/vendor/github.com/slack-go/slack/block_action.go
@@ -6,7 +6,7 @@ package slack
 type ActionBlock struct {
 	Type     MessageBlockType `json:"type"`
 	BlockID  string           `json:"block_id,omitempty"`
-	Elements BlockElements    `json:"elements"`
+	Elements *BlockElements   `json:"elements"`
 }
 
 // BlockType returns the type of the block
@@ -19,7 +19,7 @@ func NewActionBlock(blockID string, elements ...BlockElement) *ActionBlock {
 	return &ActionBlock{
 		Type:    MBTAction,
 		BlockID: blockID,
-		Elements: BlockElements{
+		Elements: &BlockElements{
 			ElementSet: elements,
 		},
 	}
diff --git a/vendor/github.com/slack-go/slack/channels.go b/vendor/github.com/slack-go/slack/channels.go
index a90d2384..c05521d0 100644
--- a/vendor/github.com/slack-go/slack/channels.go
+++ b/vendor/github.com/slack-go/slack/channels.go
@@ -19,6 +19,12 @@ 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"`
@@ -38,9 +44,21 @@ func (api *Client) channelRequest(ctx context.Context, path string, values url.V
 }
 
 // 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
@@ -49,6 +67,12 @@ func GetChannelsOptionExcludeMembers() GetChannelsOption {
 }
 
 // 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
@@ -58,12 +82,24 @@ func GetChannelsOptionExcludeArchived() GetChannelsOption {
 
 // 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},
@@ -76,12 +112,24 @@ func (api *Client) ArchiveChannelContext(ctx context.Context, channelID string)
 
 // 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},
@@ -94,12 +142,24 @@ func (api *Client) UnarchiveChannelContext(ctx context.Context, channelID string
 
 // 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},
@@ -115,12 +175,24 @@ func (api *Client) CreateChannelContext(ctx context.Context, channelName string)
 
 // 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},
@@ -160,12 +232,24 @@ func (api *Client) GetChannelHistoryContext(ctx context.Context, channelID strin
 
 // 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},
@@ -182,12 +266,24 @@ func (api *Client) GetChannelInfoContext(ctx context.Context, channelID string)
 
 // 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},
@@ -204,12 +300,24 @@ func (api *Client) InviteUserToChannelContext(ctx context.Context, channelID, us
 
 // 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},
@@ -225,12 +333,24 @@ func (api *Client) JoinChannelContext(ctx context.Context, channelName string) (
 
 // 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},
@@ -247,12 +367,24 @@ func (api *Client) LeaveChannelContext(ctx context.Context, channelID string) (b
 
 // 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},
@@ -278,6 +410,12 @@ func newChannelPagination(c *Client, options ...GetChannelsOption) (cp ChannelPa
 }
 
 // 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
@@ -288,11 +426,23 @@ type ChannelPagination struct {
 }
 
 // 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
@@ -301,6 +451,11 @@ func (t ChannelPagination) Failure(err error) error {
 	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
@@ -332,18 +487,36 @@ func (t ChannelPagination) Next(ctx context.Context) (_ ChannelPagination, err e
 }
 
 // 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())
@@ -373,6 +546,12 @@ func (api *Client) GetChannelsContext(ctx context.Context, excludeArchived bool,
 // (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)
 }
@@ -380,6 +559,12 @@ func (api *Client) SetChannelReadMark(channelID, ts string) error {
 // 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},
@@ -393,12 +578,24 @@ func (api *Client) SetChannelReadMarkContext(ctx context.Context, channelID, ts
 
 // 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},
@@ -417,12 +614,24 @@ func (api *Client) RenameChannelContext(ctx context.Context, channelID, name str
 
 // 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},
@@ -439,12 +648,24 @@ func (api *Client) SetChannelPurposeContext(ctx context.Context, channelID, purp
 
 // 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},
@@ -461,12 +682,24 @@ func (api *Client) SetChannelTopicContext(ctx context.Context, channelID, topic
 
 // 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},
diff --git a/vendor/github.com/slack-go/slack/conversation.go b/vendor/github.com/slack-go/slack/conversation.go
index 60c50fc7..6fc4a083 100644
--- a/vendor/github.com/slack-go/slack/conversation.go
+++ b/vendor/github.com/slack-go/slack/conversation.go
@@ -621,3 +621,25 @@ func (api *Client) GetConversationHistoryContext(ctx context.Context, params *Ge
 
 	return &response, response.Err()
 }
+
+// MarkConversation sets the read mark of a conversation to a specific point
+func (api *Client) MarkConversation(channel, ts string) (err error) {
+	return api.MarkConversationContext(context.Background(), channel, ts)
+}
+
+// MarkConversationContext sets the read mark of a conversation to a specific point with a custom context
+func (api *Client) MarkConversationContext(ctx context.Context, channel, ts string) error {
+	values := url.Values{
+		"token":   {api.token},
+		"channel": {channel},
+		"ts":      {ts},
+	}
+
+	response := &SlackResponse{}
+
+	err := api.postMethod(ctx, "conversations.mark", values, response)
+	if err != nil {
+		return err
+	}
+	return response.Err()
+}
diff --git a/vendor/github.com/slack-go/slack/files.go b/vendor/github.com/slack-go/slack/files.go
index 3a7363de..713038f0 100644
--- a/vendor/github.com/slack-go/slack/files.go
+++ b/vendor/github.com/slack-go/slack/files.go
@@ -11,13 +11,14 @@ import (
 
 const (
 	// Add here the defaults in the siten
-	DEFAULT_FILES_USER    = ""
-	DEFAULT_FILES_CHANNEL = ""
-	DEFAULT_FILES_TS_FROM = 0
-	DEFAULT_FILES_TS_TO   = -1
-	DEFAULT_FILES_TYPES   = "all"
-	DEFAULT_FILES_COUNT   = 100
-	DEFAULT_FILES_PAGE    = 1
+	DEFAULT_FILES_USER        = ""
+	DEFAULT_FILES_CHANNEL     = ""
+	DEFAULT_FILES_TS_FROM     = 0
+	DEFAULT_FILES_TS_TO       = -1
+	DEFAULT_FILES_TYPES       = "all"
+	DEFAULT_FILES_COUNT       = 100
+	DEFAULT_FILES_PAGE        = 1
+	DEFAULT_FILES_SHOW_HIDDEN = false
 )
 
 // File contains all the information for a file
@@ -132,6 +133,7 @@ type GetFilesParameters struct {
 	Types         string
 	Count         int
 	Page          int
+	ShowHidden    bool
 }
 
 // ListFilesParameters contains all the parameters necessary (including the optional ones) for a ListFiles() request
@@ -163,6 +165,7 @@ func NewGetFilesParameters() GetFilesParameters {
 		Types:         DEFAULT_FILES_TYPES,
 		Count:         DEFAULT_FILES_COUNT,
 		Page:          DEFAULT_FILES_PAGE,
+		ShowHidden:    DEFAULT_FILES_SHOW_HIDDEN,
 	}
 }
 
@@ -267,6 +270,9 @@ func (api *Client) GetFilesContext(ctx context.Context, params GetFilesParameter
 	if params.Page != DEFAULT_FILES_PAGE {
 		values.Add("page", strconv.Itoa(params.Page))
 	}
+	if params.ShowHidden != DEFAULT_FILES_SHOW_HIDDEN {
+		values.Add("show_files_hidden_by_limit", strconv.FormatBool(params.ShowHidden))
+	}
 
 	response, err := api.fileRequest(ctx, "files.list", values)
 	if err != nil {
diff --git a/vendor/github.com/slack-go/slack/groups.go b/vendor/github.com/slack-go/slack/groups.go
index 6ea1b134..4c5793dc 100644
--- a/vendor/github.com/slack-go/slack/groups.go
+++ b/vendor/github.com/slack-go/slack/groups.go
@@ -7,6 +7,12 @@ import (
 )
 
 // 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"`
@@ -38,11 +44,23 @@ func (api *Client) groupRequest(ctx context.Context, path string, values url.Val
 }
 
 // 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},
@@ -54,11 +72,23 @@ func (api *Client) ArchiveGroupContext(ctx context.Context, group string) error
 }
 
 // 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},
@@ -70,11 +100,23 @@ func (api *Client) UnarchiveGroupContext(ctx context.Context, group string) erro
 }
 
 // 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},
@@ -94,12 +136,24 @@ func (api *Client) CreateGroupContext(ctx context.Context, group string) (*Group
 //   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},
@@ -114,11 +168,23 @@ func (api *Client) CreateChildGroupContext(ctx context.Context, group string) (*
 }
 
 // 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},
@@ -156,11 +222,23 @@ func (api *Client) GetGroupHistoryContext(ctx context.Context, group string, par
 }
 
 // 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},
@@ -176,11 +254,23 @@ func (api *Client) InviteUserToGroupContext(ctx context.Context, group, user str
 }
 
 // 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},
@@ -192,11 +282,23 @@ func (api *Client) LeaveGroupContext(ctx context.Context, group string) (err 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},
@@ -209,11 +311,23 @@ func (api *Client) KickUserFromGroupContext(ctx context.Context, group, user str
 }
 
 // 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},
@@ -230,11 +344,23 @@ func (api *Client) GetGroupsContext(ctx context.Context, excludeArchived bool) (
 }
 
 // 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},
@@ -254,12 +380,24 @@ func (api *Client) GetGroupInfoContext(ctx context.Context, group string) (*Grou
 // 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},
@@ -272,11 +410,23 @@ func (api *Client) SetGroupReadMarkContext(ctx context.Context, group, ts string
 }
 
 // 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},
@@ -293,11 +443,23 @@ func (api *Client) OpenGroupContext(ctx context.Context, group string) (bool, bo
 // 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},
@@ -315,11 +477,23 @@ func (api *Client) RenameGroupContext(ctx context.Context, group, name string) (
 }
 
 // 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},
@@ -335,11 +509,23 @@ func (api *Client) SetGroupPurposeContext(ctx context.Context, group, purpose st
 }
 
 // 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},
@@ -356,12 +542,24 @@ func (api *Client) SetGroupTopicContext(ctx context.Context, group, topic string
 
 // 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},
diff --git a/vendor/github.com/slack-go/slack/im.go b/vendor/github.com/slack-go/slack/im.go
index ee784fef..a884b295 100644
--- a/vendor/github.com/slack-go/slack/im.go
+++ b/vendor/github.com/slack-go/slack/im.go
@@ -21,6 +21,12 @@ 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"`
@@ -37,11 +43,23 @@ func (api *Client) imRequest(ctx context.Context, path string, values url.Values
 }
 
 // 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},
@@ -57,12 +75,24 @@ func (api *Client) CloseIMChannelContext(ctx context.Context, channel string) (b
 
 // 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},
@@ -77,11 +107,23 @@ func (api *Client) OpenIMChannelContext(ctx context.Context, user string) (bool,
 }
 
 // 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},
@@ -94,11 +136,23 @@ func (api *Client) MarkIMChannelContext(ctx context.Context, channel, ts string)
 }
 
 // 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},
@@ -136,11 +190,23 @@ func (api *Client) GetIMHistoryContext(ctx context.Context, channel string, para
 }
 
 // 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},
diff --git a/vendor/github.com/slack-go/slack/internal/errorsx/errorsx.go b/vendor/github.com/slack-go/slack/internal/errorsx/errorsx.go
index cb850577..0182ec68 100644
--- a/vendor/github.com/slack-go/slack/internal/errorsx/errorsx.go
+++ b/vendor/github.com/slack-go/slack/internal/errorsx/errorsx.go
@@ -6,3 +6,12 @@ type String string
 func (t String) Error() string {
 	return string(t)
 }
+
+// Is reports whether String matches with the target error
+func (t String) Is(target error) bool {
+	if target == nil {
+		return false
+	}
+
+	return t.Error() == target.Error()
+}
diff --git a/vendor/github.com/slack-go/slack/logger.go b/vendor/github.com/slack-go/slack/logger.go
index 6a3533a9..90cb3caa 100644
--- a/vendor/github.com/slack-go/slack/logger.go
+++ b/vendor/github.com/slack-go/slack/logger.go
@@ -18,7 +18,7 @@ type ilogger interface {
 	Println(...interface{})
 }
 
-type debug interface {
+type Debug interface {
 	Debug() bool
 
 	// Debugf print a formatted debug line.
diff --git a/vendor/github.com/slack-go/slack/misc.go b/vendor/github.com/slack-go/slack/misc.go
index a5ca51bc..336f0afb 100644
--- a/vendor/github.com/slack-go/slack/misc.go
+++ b/vendor/github.com/slack-go/slack/misc.go
@@ -88,7 +88,7 @@ func fileUploadReq(ctx context.Context, path string, values url.Values, r io.Rea
 	return req, nil
 }
 
-func downloadFile(client httpClient, token string, downloadURL string, writer io.Writer, d debug) error {
+func downloadFile(client httpClient, token string, downloadURL string, writer io.Writer, d Debug) error {
 	if downloadURL == "" {
 		return fmt.Errorf("received empty download URL")
 	}
@@ -142,7 +142,7 @@ func jsonReq(endpoint string, body interface{}) (req *http.Request, err error) {
 	return req, nil
 }
 
-func parseResponseBody(body io.ReadCloser, intf interface{}, d debug) error {
+func parseResponseBody(body io.ReadCloser, intf interface{}, d Debug) error {
 	response, err := ioutil.ReadAll(body)
 	if err != nil {
 		return err
@@ -155,7 +155,7 @@ 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 string, values url.Values, intf interface{}, d Debug) error {
 	fullpath, err := filepath.Abs(fpath)
 	if err != nil {
 		return err
@@ -169,7 +169,7 @@ func postLocalWithMultipartResponse(ctx context.Context, client httpClient, meth
 	return postWithMultipartResponse(ctx, client, method, filepath.Base(fpath), fieldname, 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 string, values url.Values, r io.Reader, intf interface{}, d Debug) error {
 	pipeReader, pipeWriter := io.Pipe()
 	wr := multipart.NewWriter(pipeWriter)
 	errc := make(chan error)
@@ -216,7 +216,7 @@ func postWithMultipartResponse(ctx context.Context, client httpClient, path, nam
 	}
 }
 
-func doPost(ctx context.Context, client httpClient, req *http.Request, parser responseParser, d debug) error {
+func doPost(ctx context.Context, client httpClient, req *http.Request, parser responseParser, d Debug) error {
 	req = req.WithContext(ctx)
 	resp, err := client.Do(req)
 	if err != nil {
@@ -233,7 +233,7 @@ func doPost(ctx context.Context, client httpClient, req *http.Request, parser re
 }
 
 // post JSON.
-func postJSON(ctx context.Context, client httpClient, endpoint, token string, json []byte, intf interface{}, d debug) error {
+func postJSON(ctx context.Context, client httpClient, endpoint, token string, json []byte, intf interface{}, d Debug) error {
 	reqBody := bytes.NewBuffer(json)
 	req, err := http.NewRequest("POST", endpoint, reqBody)
 	if err != nil {
@@ -246,7 +246,7 @@ func postJSON(ctx context.Context, client httpClient, endpoint, token string, js
 }
 
 // post a url encoded form.
-func postForm(ctx context.Context, client httpClient, endpoint string, values url.Values, intf interface{}, d debug) error {
+func postForm(ctx context.Context, client httpClient, endpoint string, values url.Values, intf interface{}, d Debug) error {
 	reqBody := strings.NewReader(values.Encode())
 	req, err := http.NewRequest("POST", endpoint, reqBody)
 	if err != nil {
@@ -256,7 +256,7 @@ 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 string, values url.Values, intf interface{}, d Debug) error {
 	req, err := http.NewRequest("GET", endpoint, nil)
 	if err != nil {
 		return err
@@ -267,12 +267,12 @@ func getResource(ctx context.Context, client httpClient, endpoint string, values
 	return doPost(ctx, client, req, newJSONParser(intf), d)
 }
 
-func parseAdminResponse(ctx context.Context, client httpClient, method string, teamName string, values url.Values, intf interface{}, d debug) error {
+func parseAdminResponse(ctx context.Context, client httpClient, method string, teamName string, values url.Values, intf interface{}, d Debug) error {
 	endpoint := fmt.Sprintf(WEBAPIURLFormat, teamName, method, time.Now().Unix())
 	return postForm(ctx, client, endpoint, values, intf, d)
 }
 
-func logResponse(resp *http.Response, d debug) error {
+func logResponse(resp *http.Response, d Debug) error {
 	if d.Debug() {
 		text, err := httputil.DumpResponse(resp, true)
 		if err != nil {
@@ -300,7 +300,7 @@ func timerReset(t *time.Timer, d time.Duration) {
 	t.Reset(d)
 }
 
-func checkStatusCode(resp *http.Response, d debug) error {
+func checkStatusCode(resp *http.Response, d Debug) error {
 	if resp.StatusCode == http.StatusTooManyRequests {
 		retry, err := strconv.ParseInt(resp.Header.Get("Retry-After"), 10, 64)
 		if err != nil {
diff --git a/vendor/github.com/slack-go/slack/reminders.go b/vendor/github.com/slack-go/slack/reminders.go
index de1170a6..f312af3f 100644
--- a/vendor/github.com/slack-go/slack/reminders.go
+++ b/vendor/github.com/slack-go/slack/reminders.go
@@ -3,17 +3,16 @@ package slack
 import (
 	"context"
 	"net/url"
-	"time"
 )
 
 type Reminder struct {
-	ID         string    `json:"id"`
-	Creator    string    `json:"creator"`
-	User       string    `json:"user"`
-	Text       string    `json:"text"`
-	Recurring  bool      `json:"recurring"`
-	Time       time.Time `json:"time"`
-	CompleteTS int       `json:"complete_ts"`
+	ID         string `json:"id"`
+	Creator    string `json:"creator"`
+	User       string `json:"user"`
+	Text       string `json:"text"`
+	Recurring  bool   `json:"recurring"`
+	Time       int    `json:"time"`
+	CompleteTS int    `json:"complete_ts"`
 }
 
 type reminderResp struct {
diff --git a/vendor/github.com/slack-go/slack/security.go b/vendor/github.com/slack-go/slack/security.go
index dbe8fb2d..45103529 100644
--- a/vendor/github.com/slack-go/slack/security.go
+++ b/vendor/github.com/slack-go/slack/security.go
@@ -20,6 +20,7 @@ const (
 
 // SecretsVerifier contains the information needed to verify that the request comes from Slack
 type SecretsVerifier struct {
+	d         Debug
 	signature []byte
 	hmac      hash.Hash
 }
@@ -75,6 +76,11 @@ func NewSecretsVerifier(header http.Header, secret string) (sv SecretsVerifier,
 	return sv, err
 }
 
+func (v *SecretsVerifier) WithDebug(d Debug) *SecretsVerifier {
+	v.d = d
+	return v
+}
+
 func (v *SecretsVerifier) Write(body []byte) (n int, err error) {
 	return v.hmac.Write(body)
 }
@@ -86,8 +92,10 @@ func (v SecretsVerifier) Ensure() error {
 	if hmac.Equal(computed, v.signature) {
 		return nil
 	}
-
-	return fmt.Errorf("Expected signing signature: %s, but computed: %s", hex.EncodeToString(v.signature), hex.EncodeToString(computed))
+	if v.d != nil && v.d.Debug() {
+		v.d.Debugln(fmt.Sprintf("Expected signing signature: %s, but computed: %s", hex.EncodeToString(v.signature), hex.EncodeToString(computed)))
+	}
+	return fmt.Errorf("Computed unexpected signature of: %s", hex.EncodeToString(computed))
 }
 
 func abs64(n int64) int64 {
diff --git a/vendor/github.com/slack-go/slack/users.go b/vendor/github.com/slack-go/slack/users.go
index cdef4242..c2ee8713 100644
--- a/vendor/github.com/slack-go/slack/users.go
+++ b/vendor/github.com/slack-go/slack/users.go
@@ -513,7 +513,7 @@ func (api *Client) DeleteUserPhotoContext(ctx context.Context) (err error) {
 //
 // For more information see SetUserRealNameContextWithUser
 func (api *Client) SetUserRealName(realName string) error {
-	return api.SetUserRealNameContextWithUser(context.Background(), realName, realName)
+	return api.SetUserRealNameContextWithUser(context.Background(), "", realName)
 }
 
 // SetUserRealNameContextWithUser will set a real name for the provided user with a custom context
@@ -531,11 +531,15 @@ func (api *Client) SetUserRealNameContextWithUser(ctx context.Context, user, rea
 	}
 
 	values := url.Values{
-		"user":    {user},
 		"token":   {api.token},
 		"profile": {string(profile)},
 	}
 
+	// optional field. It should not be set if empty
+	if user != "" {
+		values["user"] = []string{user}
+	}
+
 	response := &userResponseFull{}
 	if err = api.postMethod(ctx, "users.profile.set", values, response); err != nil {
 		return err
@@ -557,7 +561,7 @@ func (api *Client) SetUserCustomStatus(statusText, statusEmoji string, statusExp
 //
 // For more information see SetUserCustomStatus
 func (api *Client) SetUserCustomStatusContext(ctx context.Context, statusText, statusEmoji string, statusExpiration int64) error {
-	return api.SetUserCustomStatusContextWithUser(context.Background(), "", statusText, statusEmoji, statusExpiration)
+	return api.SetUserCustomStatusContextWithUser(ctx, "", statusText, statusEmoji, statusExpiration)
 }
 
 // SetUserCustomStatusWithUser will set a custom status and emoji for the provided user.
@@ -598,11 +602,15 @@ func (api *Client) SetUserCustomStatusContextWithUser(ctx context.Context, user,
 	}
 
 	values := url.Values{
-		"user":    {user},
 		"token":   {api.token},
 		"profile": {string(profile)},
 	}
 
+	// optional field. It should not be set if empty
+	if user != "" {
+		values["user"] = []string{user}
+	}
+
 	response := &userResponseFull{}
 	if err = api.postMethod(ctx, "users.profile.set", values, response); err != nil {
 		return err