Update vendor (#1297)

25 files changed, 1141 insertions, 367 deletions

diff --git a/vendor/github.com/Rhymen/go-whatsapp/conn.go b/vendor/github.com/Rhymen/go-whatsapp/conn.go
index 59445591..4b28cbe1 100644
--- a/vendor/github.com/Rhymen/go-whatsapp/conn.go
+++ b/vendor/github.com/Rhymen/go-whatsapp/conn.go
@@ -116,31 +116,59 @@ Creates a new connection with a given timeout. The websocket connection to the W
 The goroutine for handling incoming messages is started
 */
 func NewConn(timeout time.Duration) (*Conn, error) {
-	wac := &Conn{
-		handler:    make([]Handler, 0),
-		msgCount:   0,
-		msgTimeout: timeout,
-		Store:      newStore(),
-
-		longClientName:  "github.com/rhymen/go-whatsapp",
-		shortClientName: "go-whatsapp",
-		clientVersion:   "0.1.0",
-	}
-	return wac, wac.connect()
+	return NewConnWithOptions(&Options{
+		Timeout: timeout,
+	})
 }
 
 // NewConnWithProxy Create a new connect with a given timeout and a http proxy.
 func NewConnWithProxy(timeout time.Duration, proxy func(*http.Request) (*url.URL, error)) (*Conn, error) {
+	return NewConnWithOptions(&Options{
+		Timeout: timeout,
+		Proxy: proxy,
+	})
+}
+
+// NewConnWithOptions Create a new connect with a given options.
+type Options struct {
+	Proxy            func(*http.Request) (*url.URL, error)
+	Timeout          time.Duration
+	Handler          []Handler
+	ShortClientName  string
+	LongClientName   string
+	ClientVersion    string
+	Store            *Store
+}
+func NewConnWithOptions(opt *Options) (*Conn, error) {
+	if opt == nil {
+		return nil, ErrOptionsNotProvided
+	}
 	wac := &Conn{
 		handler:    make([]Handler, 0),
 		msgCount:   0,
-		msgTimeout: timeout,
+		msgTimeout: opt.Timeout,
 		Store:      newStore(),
-
-		longClientName:  "github.com/rhymen/go-whatsapp",
+		longClientName:  "github.com/Rhymen/go-whatsapp",
 		shortClientName: "go-whatsapp",
 		clientVersion:   "0.1.0",
-		Proxy:           proxy,
+	}
+	if opt.Handler != nil {
+		wac.handler = opt.Handler
+	}
+	if opt.Store != nil {
+		wac.Store = opt.Store
+	}
+	if opt.Proxy != nil {
+		wac.Proxy = opt.Proxy
+	}
+	if len(opt.ShortClientName) != 0 {
+		wac.shortClientName = opt.ShortClientName
+	}
+	if len(opt.LongClientName) != 0 {
+		wac.longClientName = opt.LongClientName
+	}
+	if len(opt.ClientVersion) != 0 {
+		wac.clientVersion = opt.ClientVersion
 	}
 	return wac, wac.connect()
 }
@@ -249,10 +277,26 @@ func (wac *Conn) keepAlive(minIntervalMs int, maxIntervalMs int) {
 	}
 }
 
+// IsConnected returns whether the server connection is established or not
+func (wac *Conn) IsConnected() bool {
+	return wac.connected
+}
+
+// GetConnected returns whether the server connection is established or not
+//
+// Deprecated: function name is not go idiomatic, use IsConnected instead
 func (wac *Conn) GetConnected() bool {
-	return  wac.connected
+	return wac.connected
+}
+
+//IsLoggedIn returns whether the you are logged in or not
+func (wac *Conn) IsLoggedIn() bool {
+	return wac.loggedIn
 }
 
+// GetLoggedIn returns whether the you are logged in or not
+//
+// Deprecated: function name is not go idiomatic, use IsLoggedIn instead.
 func (wac *Conn) GetLoggedIn() bool {
-	return  wac.loggedIn
+	return wac.loggedIn
 }
diff --git a/vendor/github.com/Rhymen/go-whatsapp/errors.go b/vendor/github.com/Rhymen/go-whatsapp/errors.go
index be78ea0f..022f977a 100644
--- a/vendor/github.com/Rhymen/go-whatsapp/errors.go
+++ b/vendor/github.com/Rhymen/go-whatsapp/errors.go
@@ -22,6 +22,8 @@ var (
 	ErrMediaDownloadFailedWith404 = errors.New("download failed with status code 404")
 	ErrMediaDownloadFailedWith410 = errors.New("download failed with status code 410")
 	ErrInvalidWebsocket           = errors.New("invalid websocket")
+	ErrMessageTypeNotImplemented  = errors.New("message type not implemented")
+	ErrOptionsNotProvided         = errors.New("new conn options not provided")
 )
 
 type ErrConnectionFailed struct {
diff --git a/vendor/github.com/Rhymen/go-whatsapp/go.sum b/vendor/github.com/Rhymen/go-whatsapp/go.sum
index b724cb47..ee786406 100644
--- a/vendor/github.com/Rhymen/go-whatsapp/go.sum
+++ b/vendor/github.com/Rhymen/go-whatsapp/go.sum
@@ -32,5 +32,6 @@ golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f h1:wMNYb4v58l5UBM7MYRLPG6Zh
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223 h1:DH4skfRX4EBpamg7iV4ZlCpblAHI6s6TDM39bFZumv8=
 golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 google.golang.org/genproto v0.0.0-20180831171423-11092d34479b/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
diff --git a/vendor/github.com/Rhymen/go-whatsapp/media.go b/vendor/github.com/Rhymen/go-whatsapp/media.go
index 225eac8e..0fcacd2e 100644
--- a/vendor/github.com/Rhymen/go-whatsapp/media.go
+++ b/vendor/github.com/Rhymen/go-whatsapp/media.go
@@ -38,7 +38,7 @@ func Download(url string, mediaKey []byte, appInfo MediaType, fileLength int) ([
 		return nil, err
 	}
 	if len(data) != fileLength {
-		return nil, fmt.Errorf("file length does not match")
+		return nil, fmt.Errorf("file length does not match. Expected: %v, got: %v", fileLength, len(data))
 	}
 	return data, nil
 }
@@ -93,21 +93,21 @@ func downloadMedia(url string) (file []byte, mac []byte, err error) {
 	return data[:n-10], data[n-10 : n], nil
 }
 
-                                                                                
-type MediaConn struct {                                                         
-        Status int `json:"status"`                                              
-        MediaConn struct {                                                      
-                Auth string `json:"auth"`                                       
-                TTL int `json:"ttl"`                                            
-                Hosts []struct {                                                
-                        Hostname string `json:"hostname"`                       
-                        IPs []interface{}  `json:"ips"`                                              
-                } `json:"hosts"`                                                
-        } `json:"media_conn"`                                                   
+type MediaConn struct {
+	Status    int `json:"status"`
+	MediaConn struct {
+		Auth  string `json:"auth"`
+		TTL   int    `json:"ttl"`
+		Hosts []struct {
+			Hostname string `json:"hostname"`
+			IPs      []struct {
+				IP4 string `json:"ip4"`
+				IP6 string `json:"ip6"`
+			} `json:"ips"`
+		} `json:"hosts"`
+	} `json:"media_conn"`
 }
 
-
-
 func (wac *Conn) queryMediaConn() (hostname, auth string, ttl int, err error) {
 	queryReq := []interface{}{"query", "mediaConn"}
 	ch, err := wac.writeJson(queryReq)
@@ -131,7 +131,7 @@ func (wac *Conn) queryMediaConn() (hostname, auth string, ttl int, err error) {
 
 	var host string
 	for _, h := range resp.MediaConn.Hosts {
-		if h.Hostname!="" {
+		if h.Hostname != "" {
 			host = h.Hostname
 			break
 		}
@@ -143,10 +143,10 @@ func (wac *Conn) queryMediaConn() (hostname, auth string, ttl int, err error) {
 }
 
 var mediaTypeMap = map[MediaType]string{
-	MediaImage: "/mms/image",
-	MediaVideo: "/mms/video",
+	MediaImage:    "/mms/image",
+	MediaVideo:    "/mms/video",
 	MediaDocument: "/mms/document",
-	MediaAudio: "/mms/audio",
+	MediaAudio:    "/mms/audio",
 }
 
 func (wac *Conn) Upload(reader io.Reader, appInfo MediaType) (downloadURL string, mediaKey []byte, fileEncSha256 []byte, fileSha256 []byte, fileLength uint64, err error) {
diff --git a/vendor/github.com/Rhymen/go-whatsapp/message.go b/vendor/github.com/Rhymen/go-whatsapp/message.go
index 15797cb4..34fc02af 100644
--- a/vendor/github.com/Rhymen/go-whatsapp/message.go
+++ b/vendor/github.com/Rhymen/go-whatsapp/message.go
@@ -238,7 +238,7 @@ func getMessageInfo(msg *proto.WebMessageInfo) MessageInfo {
 	return MessageInfo{
 		Id:        msg.GetKey().GetId(),
 		RemoteJid: msg.GetKey().GetRemoteJid(),
-		SenderJid: msg.GetKey().GetParticipant(),
+		SenderJid: msg.GetParticipant(),
 		FromMe:    msg.GetKey().GetFromMe(),
 		Timestamp: msg.GetMessageTimestamp(),
 		Status:    MessageStatus(msg.GetStatus()),
@@ -838,19 +838,16 @@ func ParseProtoMessage(msg *proto.WebMessageInfo) interface{} {
 
 	default:
 		//cannot match message
-
+		return ErrMessageTypeNotImplemented
 	}
-
-	return nil
 }
 
-
 /*
 BatteryMessage represents a battery level and charging state.
 */
 type BatteryMessage struct {
-	Plugged bool
-	Powersave bool
+	Plugged    bool
+	Powersave  bool
 	Percentage int
 }
 
@@ -859,8 +856,8 @@ func getBatteryMessage(msg map[string]string) BatteryMessage {
 	powersave, _ := strconv.ParseBool(msg["powersave"])
 	percentage, _ := strconv.Atoi(msg["value"])
 	batteryMessage := BatteryMessage{
-		Plugged: plugged,
-		Powersave: powersave,
+		Plugged:    plugged,
+		Powersave:  powersave,
 		Percentage: percentage,
 	}
 
@@ -869,7 +866,7 @@ func getBatteryMessage(msg map[string]string) BatteryMessage {
 
 func getNewContact(msg map[string]string) Contact {
 	contact := Contact{
-		Jid: msg["jid"],
+		Jid:    msg["jid"],
 		Notify: msg["notify"],
 	}
 
diff --git a/vendor/github.com/Rhymen/go-whatsapp/read.go b/vendor/github.com/Rhymen/go-whatsapp/read.go
index c35f7f0e..81e16619 100644
--- a/vendor/github.com/Rhymen/go-whatsapp/read.go
+++ b/vendor/github.com/Rhymen/go-whatsapp/read.go
@@ -62,6 +62,10 @@ func (wac *Conn) processReadData(msgType int, msg []byte) error {
 		data[0] = "!"
 	}
 
+	if len(data) == 2 && len(data[1]) == 0 {
+		return nil
+	}
+
 	if len(data) != 2 || len(data[1]) == 0 {
 		return ErrInvalidWsData
 	}
diff --git a/vendor/github.com/gomarkdown/markdown/README.md b/vendor/github.com/gomarkdown/markdown/README.md
index 5488280c..095db307 100644
--- a/vendor/github.com/gomarkdown/markdown/README.md
+++ b/vendor/github.com/gomarkdown/markdown/README.md
@@ -6,11 +6,7 @@ Package `github.com/gomarkdown/markdown` is a very fast Go library for parsing [
 
 It's fast and supports common extensions.
 
-## Installation
-
-    go get -u github.com/gomarkdown/markdown
-
-API Docs:
+## API Docs:
 
 - https://godoc.org/github.com/gomarkdown/markdown : top level package
 - https://godoc.org/github.com/gomarkdown/markdown/ast : defines abstract syntax tree of parsed markdown document
diff --git a/vendor/github.com/gomarkdown/markdown/ast/node.go b/vendor/github.com/gomarkdown/markdown/ast/node.go
index e6fcba9a..9d2422af 100644
--- a/vendor/github.com/gomarkdown/markdown/ast/node.go
+++ b/vendor/github.com/gomarkdown/markdown/ast/node.go
@@ -250,11 +250,12 @@ type Del struct {
 type Link struct {
 	Container
 
-	Destination []byte // Destination is what goes into a href
-	Title       []byte // Title is the tooltip thing that goes in a title attribute
-	NoteID      int    // NoteID contains a serial number of a footnote, zero if it's not a footnote
-	Footnote    Node   // If it's a footnote, this is a direct link to the footnote Node. Otherwise nil.
-	DeferredID  []byte // If a deferred link this holds the original ID.
+	Destination          []byte   // Destination is what goes into a href
+	Title                []byte   // Title is the tooltip thing that goes in a title attribute
+	NoteID               int      // NoteID contains a serial number of a footnote, zero if it's not a footnote
+	Footnote             Node     // If it's a footnote, this is a direct link to the footnote Node. Otherwise nil.
+	DeferredID           []byte   // If a deferred link this holds the original ID.
+	AdditionalAttributes []string // Defines additional attributes to use during rendering.
 }
 
 // CrossReference is a reference node.
diff --git a/vendor/github.com/gomarkdown/markdown/html/callouts.go b/vendor/github.com/gomarkdown/markdown/html/callouts.go
deleted file mode 100644
index e377af22..00000000
--- a/vendor/github.com/gomarkdown/markdown/html/callouts.go
+++ /dev/null
@@ -1,42 +0,0 @@
-package html
-
-import (
-	"bytes"
-	"io"
-
-	"github.com/gomarkdown/markdown/ast"
-	"github.com/gomarkdown/markdown/parser"
-)
-
-// EscapeHTMLCallouts writes html-escaped d to w. It escapes &, <, > and " characters, *but*
-// expands callouts <<N>> with the callout HTML, i.e. by calling r.callout() with a newly created
-// ast.Callout node.
-func (r *Renderer) EscapeHTMLCallouts(w io.Writer, d []byte) {
-	ld := len(d)
-Parse:
-	for i := 0; i < ld; i++ {
-		for _, comment := range r.opts.Comments {
-			if !bytes.HasPrefix(d[i:], comment) {
-				break
-			}
-
-			lc := len(comment)
-			if i+lc < ld {
-				if id, consumed := parser.IsCallout(d[i+lc:]); consumed > 0 {
-					// We have seen a callout
-					callout := &ast.Callout{ID: id}
-					r.callout(w, callout)
-					i += consumed + lc - 1
-					continue Parse
-				}
-			}
-		}
-
-		escSeq := Escaper[d[i]]
-		if escSeq != nil {
-			w.Write(escSeq)
-		} else {
-			w.Write([]byte{d[i]})
-		}
-	}
-}
diff --git a/vendor/github.com/gomarkdown/markdown/html/esc.go b/vendor/github.com/gomarkdown/markdown/html/esc.go
deleted file mode 100644
index 89ec9a27..00000000
--- a/vendor/github.com/gomarkdown/markdown/html/esc.go
+++ /dev/null
@@ -1,50 +0,0 @@
-package html
-
-import (
-	"html"
-	"io"
-)
-
-var Escaper = [256][]byte{
-	'&': []byte("&amp;"),
-	'<': []byte("&lt;"),
-	'>': []byte("&gt;"),
-	'"': []byte("&quot;"),
-}
-
-// EscapeHTML writes html-escaped d to w. It escapes &, <, > and " characters.
-func EscapeHTML(w io.Writer, d []byte) {
-	var start, end int
-	n := len(d)
-	for end < n {
-		escSeq := Escaper[d[end]]
-		if escSeq != nil {
-			w.Write(d[start:end])
-			w.Write(escSeq)
-			start = end + 1
-		}
-		end++
-	}
-	if start < n && end <= n {
-		w.Write(d[start:end])
-	}
-}
-
-func escLink(w io.Writer, text []byte) {
-	unesc := html.UnescapeString(string(text))
-	EscapeHTML(w, []byte(unesc))
-}
-
-// Escape writes the text to w, but skips the escape character.
-func Escape(w io.Writer, text []byte) {
-	esc := false
-	for i := 0; i < len(text); i++ {
-		if text[i] == '\\' {
-			esc = !esc
-		}
-		if esc && text[i] == '\\' {
-			continue
-		}
-		w.Write([]byte{text[i]})
-	}
-}
diff --git a/vendor/github.com/gomarkdown/markdown/html/renderer.go b/vendor/github.com/gomarkdown/markdown/html/renderer.go
index 01e0deec..6c56ac12 100644
--- a/vendor/github.com/gomarkdown/markdown/html/renderer.go
+++ b/vendor/github.com/gomarkdown/markdown/html/renderer.go
@@ -3,6 +3,7 @@ package html
 import (
 	"bytes"
 	"fmt"
+	"html"
 	"io"
 	"regexp"
 	"sort"
@@ -10,6 +11,7 @@ import (
 	"strings"
 
 	"github.com/gomarkdown/markdown/ast"
+	"github.com/gomarkdown/markdown/parser"
 )
 
 // Flags control optional behavior of HTML renderer.
@@ -125,13 +127,60 @@ type Renderer struct {
 	headingIDs map[string]int
 
 	lastOutputLen int
-	disableTags   int
+
+	// if > 0, will strip html tags in Out and Outs
+	DisableTags int
 
 	sr *SPRenderer
 
 	documentMatter ast.DocumentMatters // keep track of front/main/back matter.
 }
 
+// Escaper defines how to escape HTML special characters
+var Escaper = [256][]byte{
+	'&': []byte("&amp;"),
+	'<': []byte("&lt;"),
+	'>': []byte("&gt;"),
+	'"': []byte("&quot;"),
+}
+
+// EscapeHTML writes html-escaped d to w. It escapes &, <, > and " characters.
+func EscapeHTML(w io.Writer, d []byte) {
+	var start, end int
+	n := len(d)
+	for end < n {
+		escSeq := Escaper[d[end]]
+		if escSeq != nil {
+			w.Write(d[start:end])
+			w.Write(escSeq)
+			start = end + 1
+		}
+		end++
+	}
+	if start < n && end <= n {
+		w.Write(d[start:end])
+	}
+}
+
+func escLink(w io.Writer, text []byte) {
+	unesc := html.UnescapeString(string(text))
+	EscapeHTML(w, []byte(unesc))
+}
+
+// Escape writes the text to w, but skips the escape character.
+func Escape(w io.Writer, text []byte) {
+	esc := false
+	for i := 0; i < len(text); i++ {
+		if text[i] == '\\' {
+			esc = !esc
+		}
+		if esc && text[i] == '\\' {
+			continue
+		}
+		w.Write([]byte{text[i]})
+	}
+}
+
 // NewRenderer creates and configures an Renderer object, which
 // satisfies the Renderer interface.
 func NewRenderer(opts RendererOptions) *Renderer {
@@ -384,25 +433,28 @@ func skipParagraphTags(para *ast.Paragraph) bool {
 	return tightOrTerm
 }
 
-func (r *Renderer) out(w io.Writer, d []byte) {
+// Out is a helper to write data to writer
+func (r *Renderer) Out(w io.Writer, d []byte) {
 	r.lastOutputLen = len(d)
-	if r.disableTags > 0 {
+	if r.DisableTags > 0 {
 		d = htmlTagRe.ReplaceAll(d, []byte{})
 	}
 	w.Write(d)
 }
 
-func (r *Renderer) outs(w io.Writer, s string) {
+// Outs is a helper to write data to writer
+func (r *Renderer) Outs(w io.Writer, s string) {
 	r.lastOutputLen = len(s)
-	if r.disableTags > 0 {
+	if r.DisableTags > 0 {
 		s = htmlTagRe.ReplaceAllString(s, "")
 	}
 	io.WriteString(w, s)
 }
 
-func (r *Renderer) cr(w io.Writer) {
+// CR writes a new line
+func (r *Renderer) CR(w io.Writer) {
 	if r.lastOutputLen > 0 {
-		r.outs(w, "\n")
+		r.Outs(w, "\n")
 	}
 }
 
@@ -426,11 +478,12 @@ func headingCloseTagFromLevel(level int) string {
 }
 
 func (r *Renderer) outHRTag(w io.Writer, attrs []string) {
-	hr := tagWithAttributes("<hr", attrs)
-	r.outOneOf(w, r.opts.Flags&UseXHTML == 0, hr, "<hr />")
+	hr := TagWithAttributes("<hr", attrs)
+	r.OutOneOf(w, r.opts.Flags&UseXHTML == 0, hr, "<hr />")
 }
 
-func (r *Renderer) text(w io.Writer, text *ast.Text) {
+// Text writes ast.Text node
+func (r *Renderer) Text(w io.Writer, text *ast.Text) {
 	if r.opts.Flags&Smartypants != 0 {
 		var tmp bytes.Buffer
 		EscapeHTML(&tmp, text.Literal)
@@ -445,41 +498,46 @@ func (r *Renderer) text(w io.Writer, text *ast.Text) {
 	}
 }
 
-func (r *Renderer) hardBreak(w io.Writer, node *ast.Hardbreak) {
-	r.outOneOf(w, r.opts.Flags&UseXHTML == 0, "<br>", "<br />")
-	r.cr(w)
+// HardBreak writes ast.Hardbreak node
+func (r *Renderer) HardBreak(w io.Writer, node *ast.Hardbreak) {
+	r.OutOneOf(w, r.opts.Flags&UseXHTML == 0, "<br>", "<br />")
+	r.CR(w)
 }
 
-func (r *Renderer) nonBlockingSpace(w io.Writer, node *ast.NonBlockingSpace) {
-	r.outs(w, "&nbsp;")
+// NonBlockingSpace writes ast.NonBlockingSpace node
+func (r *Renderer) NonBlockingSpace(w io.Writer, node *ast.NonBlockingSpace) {
+	r.Outs(w, "&nbsp;")
 }
 
-func (r *Renderer) outOneOf(w io.Writer, outFirst bool, first string, second string) {
+// OutOneOf writes first or second depending on outFirst
+func (r *Renderer) OutOneOf(w io.Writer, outFirst bool, first string, second string) {
 	if outFirst {
-		r.outs(w, first)
+		r.Outs(w, first)
 	} else {
-		r.outs(w, second)
+		r.Outs(w, second)
 	}
 }
 
-func (r *Renderer) outOneOfCr(w io.Writer, outFirst bool, first string, second string) {
+// OutOneOfCr writes CR + first or second + CR depending on outFirst
+func (r *Renderer) OutOneOfCr(w io.Writer, outFirst bool, first string, second string) {
 	if outFirst {
-		r.cr(w)
-		r.outs(w, first)
+		r.CR(w)
+		r.Outs(w, first)
 	} else {
-		r.outs(w, second)
-		r.cr(w)
+		r.Outs(w, second)
+		r.CR(w)
 	}
 }
 
-func (r *Renderer) htmlSpan(w io.Writer, span *ast.HTMLSpan) {
+// HTMLSpan writes ast.HTMLSpan node
+func (r *Renderer) HTMLSpan(w io.Writer, span *ast.HTMLSpan) {
 	if r.opts.Flags&SkipHTML == 0 {
-		r.out(w, span.Literal)
+		r.Out(w, span.Literal)
 	}
 }
 
 func (r *Renderer) linkEnter(w io.Writer, link *ast.Link) {
-	var attrs []string
+	attrs := link.AdditionalAttributes
 	dest := link.Destination
 	dest = r.addAbsPrefix(dest)
 	var hrefBuf bytes.Buffer
@@ -488,7 +546,7 @@ func (r *Renderer) linkEnter(w io.Writer, link *ast.Link) {
 	hrefBuf.WriteByte('"')
 	attrs = append(attrs, hrefBuf.String())
 	if link.NoteID != 0 {
-		r.outs(w, footnoteRef(r.opts.FootnoteAnchorPrefix, link))
+		r.Outs(w, footnoteRef(r.opts.FootnoteAnchorPrefix, link))
 		return
 	}
 
@@ -505,14 +563,15 @@ func (r *Renderer) linkEnter(w io.Writer, link *ast.Link) {
 
 func (r *Renderer) linkExit(w io.Writer, link *ast.Link) {
 	if link.NoteID == 0 {
-		r.outs(w, "</a>")
+		r.Outs(w, "</a>")
 	}
 }
 
-func (r *Renderer) link(w io.Writer, link *ast.Link, entering bool) {
+// Link writes ast.Link node
+func (r *Renderer) Link(w io.Writer, link *ast.Link, entering bool) {
 	// mark it but don't link it if it is not a safe link: no smartypants
 	if needSkipLink(r.opts.Flags, link.Destination) {
-		r.outOneOf(w, entering, "<tt>", "</tt>")
+		r.OutOneOf(w, entering, "<tt>", "</tt>")
 		return
 	}
 
@@ -526,26 +585,35 @@ func (r *Renderer) link(w io.Writer, link *ast.Link, entering bool) {
 func (r *Renderer) imageEnter(w io.Writer, image *ast.Image) {
 	dest := image.Destination
 	dest = r.addAbsPrefix(dest)
-	if r.disableTags == 0 {
+	if r.DisableTags == 0 {
 		//if options.safe && potentiallyUnsafe(dest) {
 		//out(w, `<img src="" alt="`)
 		//} else {
-		r.outs(w, `<img src="`)
+		r.Outs(w, `<img src="`)
 		escLink(w, dest)
-		r.outs(w, `" alt="`)
+		r.Outs(w, `" alt="`)
 		//}
 	}
-	r.disableTags++
+	r.DisableTags++
 }
 
 func (r *Renderer) imageExit(w io.Writer, image *ast.Image) {
-	r.disableTags--
-	if r.disableTags == 0 {
+	r.DisableTags--
+	if r.DisableTags == 0 {
 		if image.Title != nil {
-			r.outs(w, `" title="`)
+			r.Outs(w, `" title="`)
 			EscapeHTML(w, image.Title)
 		}
-		r.outs(w, `" />`)
+		r.Outs(w, `" />`)
+	}
+}
+
+// Image writes ast.Image node
+func (r *Renderer) Image(w io.Writer, node *ast.Image, entering bool) {
+	if entering {
+		r.imageEnter(w, node)
+	} else {
+		r.imageExit(w, node)
 	}
 }
 
@@ -556,33 +624,34 @@ func (r *Renderer) paragraphEnter(w io.Writer, para *ast.Paragraph) {
 	if prev != nil {
 		switch prev.(type) {
 		case *ast.HTMLBlock, *ast.List, *ast.Paragraph, *ast.Heading, *ast.CaptionFigure, *ast.CodeBlock, *ast.BlockQuote, *ast.Aside, *ast.HorizontalRule:
-			r.cr(w)
+			r.CR(w)
 		}
 	}
 
 	if prev == nil {
 		_, isParentBlockQuote := para.Parent.(*ast.BlockQuote)
 		if isParentBlockQuote {
-			r.cr(w)
+			r.CR(w)
 		}
 		_, isParentAside := para.Parent.(*ast.Aside)
 		if isParentAside {
-			r.cr(w)
+			r.CR(w)
 		}
 	}
 
-	tag := tagWithAttributes("<p", BlockAttrs(para))
-	r.outs(w, tag)
+	tag := TagWithAttributes("<p", BlockAttrs(para))
+	r.Outs(w, tag)
 }
 
 func (r *Renderer) paragraphExit(w io.Writer, para *ast.Paragraph) {
-	r.outs(w, "</p>")
+	r.Outs(w, "</p>")
 	if !(isListItem(para.Parent) && ast.GetNextNode(para) == nil) {
-		r.cr(w)
+		r.CR(w)
 	}
 }
 
-func (r *Renderer) paragraph(w io.Writer, para *ast.Paragraph, entering bool) {
+// Paragraph writes ast.Paragraph node
+func (r *Renderer) Paragraph(w io.Writer, para *ast.Paragraph, entering bool) {
 	if skipParagraphTags(para) {
 		return
 	}
@@ -592,27 +661,22 @@ func (r *Renderer) paragraph(w io.Writer, para *ast.Paragraph, entering bool) {
 		r.paragraphExit(w, para)
 	}
 }
-func (r *Renderer) image(w io.Writer, node *ast.Image, entering bool) {
-	if entering {
-		r.imageEnter(w, node)
-	} else {
-		r.imageExit(w, node)
-	}
-}
 
-func (r *Renderer) code(w io.Writer, node *ast.Code) {
-	r.outs(w, "<code>")
+// Code writes ast.Code node
+func (r *Renderer) Code(w io.Writer, node *ast.Code) {
+	r.Outs(w, "<code>")
 	EscapeHTML(w, node.Literal)
-	r.outs(w, "</code>")
+	r.Outs(w, "</code>")
 }
 
-func (r *Renderer) htmlBlock(w io.Writer, node *ast.HTMLBlock) {
+// HTMLBlock write ast.HTMLBlock node
+func (r *Renderer) HTMLBlock(w io.Writer, node *ast.HTMLBlock) {
 	if r.opts.Flags&SkipHTML != 0 {
 		return
 	}
-	r.cr(w)
-	r.out(w, node.Literal)
-	r.cr(w)
+	r.CR(w)
+	r.Out(w, node.Literal)
+	r.CR(w)
 }
 
 func (r *Renderer) headingEnter(w io.Writer, nodeData *ast.Heading) {
@@ -644,18 +708,19 @@ func (r *Renderer) headingEnter(w io.Writer, nodeData *ast.Heading) {
 		attrs = append(attrs, attrID)
 	}
 	attrs = append(attrs, BlockAttrs(nodeData)...)
-	r.cr(w)
+	r.CR(w)
 	r.outTag(w, headingOpenTagFromLevel(nodeData.Level), attrs)
 }
 
 func (r *Renderer) headingExit(w io.Writer, heading *ast.Heading) {
-	r.outs(w, headingCloseTagFromLevel(heading.Level))
+	r.Outs(w, headingCloseTagFromLevel(heading.Level))
 	if !(isListItem(heading.Parent) && ast.GetNextNode(heading) == nil) {
-		r.cr(w)
+		r.CR(w)
 	}
 }
 
-func (r *Renderer) heading(w io.Writer, node *ast.Heading, entering bool) {
+// Heading writes ast.Heading node
+func (r *Renderer) Heading(w io.Writer, node *ast.Heading, entering bool) {
 	if entering {
 		r.headingEnter(w, node)
 	} else {
@@ -663,10 +728,11 @@ func (r *Renderer) heading(w io.Writer, node *ast.Heading, entering bool) {
 	}
 }
 
-func (r *Renderer) horizontalRule(w io.Writer, node *ast.HorizontalRule) {
-	r.cr(w)
+// HorizontalRule writes ast.HorizontalRule node
+func (r *Renderer) HorizontalRule(w io.Writer, node *ast.HorizontalRule) {
+	r.CR(w)
 	r.outHRTag(w, BlockAttrs(node))
-	r.cr(w)
+	r.CR(w)
 }
 
 func (r *Renderer) listEnter(w io.Writer, nodeData *ast.List) {
@@ -674,17 +740,17 @@ func (r *Renderer) listEnter(w io.Writer, nodeData *ast.List) {
 	var attrs []string
 
 	if nodeData.IsFootnotesList {
-		r.outs(w, "\n<div class=\"footnotes\">\n\n")
+		r.Outs(w, "\n<div class=\"footnotes\">\n\n")
 		if r.opts.Flags&FootnoteNoHRTag == 0 {
 			r.outHRTag(w, nil)
-			r.cr(w)
+			r.CR(w)
 		}
 	}
-	r.cr(w)
+	r.CR(w)
 	if isListItem(nodeData.Parent) {
 		grand := nodeData.Parent.GetParent()
 		if isListTight(grand) {
-			r.cr(w)
+			r.CR(w)
 		}
 	}
 
@@ -700,7 +766,7 @@ func (r *Renderer) listEnter(w io.Writer, nodeData *ast.List) {
 	}
 	attrs = append(attrs, BlockAttrs(nodeData)...)
 	r.outTag(w, openTag, attrs)
-	r.cr(w)
+	r.CR(w)
 }
 
 func (r *Renderer) listExit(w io.Writer, list *ast.List) {
@@ -711,7 +777,7 @@ func (r *Renderer) listExit(w io.Writer, list *ast.List) {
 	if list.ListFlags&ast.ListTypeDefinition != 0 {
 		closeTag = "</dl>"
 	}
-	r.outs(w, closeTag)
+	r.Outs(w, closeTag)
 
 	//cr(w)
 	//if node.parent.Type != Item {
@@ -721,18 +787,19 @@ func (r *Renderer) listExit(w io.Writer, list *ast.List) {
 	switch parent.(type) {
 	case *ast.ListItem:
 		if ast.GetNextNode(list) != nil {
-			r.cr(w)
+			r.CR(w)
 		}
 	case *ast.Document, *ast.BlockQuote, *ast.Aside:
-		r.cr(w)
+		r.CR(w)
 	}
 
 	if list.IsFootnotesList {
-		r.outs(w, "\n</div>\n")
+		r.Outs(w, "\n</div>\n")
 	}
 }
 
-func (r *Renderer) list(w io.Writer, list *ast.List, entering bool) {
+// List writes ast.List node
+func (r *Renderer) List(w io.Writer, list *ast.List, entering bool) {
 	if entering {
 		r.listEnter(w, list)
 	} else {
@@ -742,11 +809,11 @@ func (r *Renderer) list(w io.Writer, list *ast.List, entering bool) {
 
 func (r *Renderer) listItemEnter(w io.Writer, listItem *ast.ListItem) {
 	if listItemOpenCR(listItem) {
-		r.cr(w)
+		r.CR(w)
 	}
 	if listItem.RefLink != nil {
 		slug := slugify(listItem.RefLink)
-		r.outs(w, footnoteItem(r.opts.FootnoteAnchorPrefix, slug))
+		r.Outs(w, footnoteItem(r.opts.FootnoteAnchorPrefix, slug))
 		return
 	}
 
@@ -757,7 +824,7 @@ func (r *Renderer) listItemEnter(w io.Writer, listItem *ast.ListItem) {
 	if listItem.ListFlags&ast.ListTypeTerm != 0 {
 		openTag = "<dt>"
 	}
-	r.outs(w, openTag)
+	r.Outs(w, openTag)
 }
 
 func (r *Renderer) listItemExit(w io.Writer, listItem *ast.ListItem) {
@@ -766,7 +833,7 @@ func (r *Renderer) listItemExit(w io.Writer, listItem *ast.ListItem) {
 		prefix := r.opts.FootnoteAnchorPrefix
 		link := r.opts.FootnoteReturnLinkContents
 		s := footnoteReturnLink(prefix, link, slug)
-		r.outs(w, s)
+		r.Outs(w, s)
 	}
 
 	closeTag := "</li>"
@@ -776,11 +843,12 @@ func (r *Renderer) listItemExit(w io.Writer, listItem *ast.ListItem) {
 	if listItem.ListFlags&ast.ListTypeTerm != 0 {
 		closeTag = "</dt>"
 	}
-	r.outs(w, closeTag)
-	r.cr(w)
+	r.Outs(w, closeTag)
+	r.CR(w)
 }
 
-func (r *Renderer) listItem(w io.Writer, listItem *ast.ListItem, entering bool) {
+// ListItem writes ast.ListItem node
+func (r *Renderer) ListItem(w io.Writer, listItem *ast.ListItem, entering bool) {
 	if entering {
 		r.listItemEnter(w, listItem)
 	} else {
@@ -788,38 +856,74 @@ func (r *Renderer) listItem(w io.Writer, listItem *ast.ListItem, entering bool)
 	}
 }
 
-func (r *Renderer) codeBlock(w io.Writer, codeBlock *ast.CodeBlock) {
+// EscapeHTMLCallouts writes html-escaped d to w. It escapes &, <, > and " characters, *but*
+// expands callouts <<N>> with the callout HTML, i.e. by calling r.callout() with a newly created
+// ast.Callout node.
+func (r *Renderer) EscapeHTMLCallouts(w io.Writer, d []byte) {
+	ld := len(d)
+Parse:
+	for i := 0; i < ld; i++ {
+		for _, comment := range r.opts.Comments {
+			if !bytes.HasPrefix(d[i:], comment) {
+				break
+			}
+
+			lc := len(comment)
+			if i+lc < ld {
+				if id, consumed := parser.IsCallout(d[i+lc:]); consumed > 0 {
+					// We have seen a callout
+					callout := &ast.Callout{ID: id}
+					r.Callout(w, callout)
+					i += consumed + lc - 1
+					continue Parse
+				}
+			}
+		}
+
+		escSeq := Escaper[d[i]]
+		if escSeq != nil {
+			w.Write(escSeq)
+		} else {
+			w.Write([]byte{d[i]})
+		}
+	}
+}
+
+// CodeBlock writes ast.CodeBlock node
+func (r *Renderer) CodeBlock(w io.Writer, codeBlock *ast.CodeBlock) {
 	var attrs []string
 	// TODO(miek): this can add multiple class= attribute, they should be coalesced into one.
 	// This is probably true for some other elements as well
 	attrs = appendLanguageAttr(attrs, codeBlock.Info)
 	attrs = append(attrs, BlockAttrs(codeBlock)...)
-	r.cr(w)
+	r.CR(w)
 
-	r.outs(w, "<pre>")
-	code := tagWithAttributes("<code", attrs)
-	r.outs(w, code)
+	r.Outs(w, "<pre>")
+	code := TagWithAttributes("<code", attrs)
+	r.Outs(w, code)
 	if r.opts.Comments != nil {
 		r.EscapeHTMLCallouts(w, codeBlock.Literal)
 	} else {
 		EscapeHTML(w, codeBlock.Literal)
 	}
-	r.outs(w, "</code>")
-	r.outs(w, "</pre>")
+	r.Outs(w, "</code>")
+	r.Outs(w, "</pre>")
 	if !isListItem(codeBlock.Parent) {
-		r.cr(w)
+		r.CR(w)
 	}
 }
 
-func (r *Renderer) caption(w io.Writer, caption *ast.Caption, entering bool) {
+// Caption writes ast.Caption node
+func (r *Renderer) Caption(w io.Writer, caption *ast.Caption, entering bool) {
 	if entering {
-		r.outs(w, "<figcaption>")
+		r.Outs(w, "<figcaption>")
 		return
 	}
-	r.outs(w, "</figcaption>")
+	r.Outs(w, "</figcaption>")
 }
 
-func (r *Renderer) captionFigure(w io.Writer, figure *ast.CaptionFigure, entering bool) {
+// CaptionFigure writes ast.CaptionFigure node
+func (r *Renderer) CaptionFigure(w io.Writer, figure *ast.CaptionFigure, entering bool) {
 	// TODO(miek): copy more generic ways of mmark over to here.
 	fig := "<figure"
 	if figure.HeadingID != "" {
@@ -827,13 +931,14 @@ func (r *Renderer) captionFigure(w io.Writer, figure *ast.CaptionFigure, enterin
 	} else {
 		fig += ">"
 	}
-	r.outOneOf(w, entering, fig, "\n</figure>\n")
+	r.OutOneOf(w, entering, fig, "\n</figure>\n")
 }
 
-func (r *Renderer) tableCell(w io.Writer, tableCell *ast.TableCell, entering bool) {
+// TableCell writes ast.TableCell node
+func (r *Renderer) TableCell(w io.Writer, tableCell *ast.TableCell, entering bool) {
 	if !entering {
-		r.outOneOf(w, tableCell.IsHeader, "</th>", "</td>")
-		r.cr(w)
+		r.OutOneOf(w, tableCell.IsHeader, "</th>", "</td>")
+		r.CR(w)
 		return
 	}
 
@@ -848,44 +953,47 @@ func (r *Renderer) tableCell(w io.Writer, tableCell *ast.TableCell, entering boo
 		attrs = append(attrs, fmt.Sprintf(`align="%s"`, align))
 	}
 	if ast.GetPrevNode(tableCell) == nil {
-		r.cr(w)
+		r.CR(w)
 	}
 	r.outTag(w, openTag, attrs)
 }
 
-func (r *Renderer) tableBody(w io.Writer, node *ast.TableBody, entering bool) {
+// TableBody writes ast.TableBody node
+func (r *Renderer) TableBody(w io.Writer, node *ast.TableBody, entering bool) {
 	if entering {
-		r.cr(w)
-		r.outs(w, "<tbody>")
+		r.CR(w)
+		r.Outs(w, "<tbody>")
 		// XXX: this is to adhere to a rather silly test. Should fix test.
 		if ast.GetFirstChild(node) == nil {
-			r.cr(w)
+			r.CR(w)
 		}
 	} else {
-		r.outs(w, "</tbody>")
-		r.cr(w)
+		r.Outs(w, "</tbody>")
+		r.CR(w)
 	}
 }
 
-func (r *Renderer) matter(w io.Writer, node *ast.DocumentMatter, entering bool) {
+// DocumentMatter writes ast.DocumentMatter
+func (r *Renderer) DocumentMatter(w io.Writer, node *ast.DocumentMatter, entering bool) {
 	if !entering {
 		return
 	}
 	if r.documentMatter != ast.DocumentMatterNone {
-		r.outs(w, "</section>\n")
+		r.Outs(w, "</section>\n")
 	}
 	switch node.Matter {
 	case ast.DocumentMatterFront:
-		r.outs(w, `<section data-matter="front">`)
+		r.Outs(w, `<section data-matter="front">`)
 	case ast.DocumentMatterMain:
-		r.outs(w, `<section data-matter="main">`)
+		r.Outs(w, `<section data-matter="main">`)
 	case ast.DocumentMatterBack:
-		r.outs(w, `<section data-matter="back">`)
+		r.Outs(w, `<section data-matter="back">`)
 	}
 	r.documentMatter = node.Matter
 }
 
-func (r *Renderer) citation(w io.Writer, node *ast.Citation) {
+// Citation writes ast.Citation node
+func (r *Renderer) Citation(w io.Writer, node *ast.Citation) {
 	for i, c := range node.Destination {
 		attr := []string{`class="none"`}
 		switch node.Type[i] {
@@ -897,23 +1005,25 @@ func (r *Renderer) citation(w io.Writer, node *ast.Citation) {
 			attr[0] = `class="suppressed"`
 		}
 		r.outTag(w, "<cite", attr)
-		r.outs(w, fmt.Sprintf(`<a href="#%s">`+r.opts.CitationFormatString+`</a>`, c, c))
-		r.outs(w, "</cite>")
+		r.Outs(w, fmt.Sprintf(`<a href="#%s">`+r.opts.CitationFormatString+`</a>`, c, c))
+		r.Outs(w, "</cite>")
 	}
 }
 
-func (r *Renderer) callout(w io.Writer, node *ast.Callout) {
+// Callout writes ast.Callout node
+func (r *Renderer) Callout(w io.Writer, node *ast.Callout) {
 	attr := []string{`class="callout"`}
 	r.outTag(w, "<span", attr)
-	r.out(w, node.ID)
-	r.outs(w, "</span>")
+	r.Out(w, node.ID)
+	r.Outs(w, "</span>")
 }
 
-func (r *Renderer) index(w io.Writer, node *ast.Index) {
+// Index writes ast.Index node
+func (r *Renderer) Index(w io.Writer, node *ast.Index) {
 	// there is no in-text representation.
 	attr := []string{`class="index"`, fmt.Sprintf(`id="%s"`, node.ID)}
 	r.outTag(w, "<span", attr)
-	r.outs(w, "</span>")
+	r.Outs(w, "</span>")
 }
 
 // RenderNode renders a markdown node to HTML
@@ -926,102 +1036,102 @@ func (r *Renderer) RenderNode(w io.Writer, node ast.Node, entering bool) ast.Wal
 	}
 	switch node := node.(type) {
 	case *ast.Text:
-		r.text(w, node)
+		r.Text(w, node)
 	case *ast.Softbreak:
-		r.cr(w)
+		r.CR(w)
 		// TODO: make it configurable via out(renderer.softbreak)
 	case *ast.Hardbreak:
-		r.hardBreak(w, node)
+		r.HardBreak(w, node)
 	case *ast.NonBlockingSpace:
-		r.nonBlockingSpace(w, node)
+		r.NonBlockingSpace(w, node)
 	case *ast.Emph:
-		r.outOneOf(w, entering, "<em>", "</em>")
+		r.OutOneOf(w, entering, "<em>", "</em>")
 	case *ast.Strong:
-		r.outOneOf(w, entering, "<strong>", "</strong>")
+		r.OutOneOf(w, entering, "<strong>", "</strong>")
 	case *ast.Del:
-		r.outOneOf(w, entering, "<del>", "</del>")
+		r.OutOneOf(w, entering, "<del>", "</del>")
 	case *ast.BlockQuote:
-		tag := tagWithAttributes("<blockquote", BlockAttrs(node))
-		r.outOneOfCr(w, entering, tag, "</blockquote>")
+		tag := TagWithAttributes("<blockquote", BlockAttrs(node))
+		r.OutOneOfCr(w, entering, tag, "</blockquote>")
 	case *ast.Aside:
-		tag := tagWithAttributes("<aside", BlockAttrs(node))
-		r.outOneOfCr(w, entering, tag, "</aside>")
+		tag := TagWithAttributes("<aside", BlockAttrs(node))
+		r.OutOneOfCr(w, entering, tag, "</aside>")
 	case *ast.Link:
-		r.link(w, node, entering)
+		r.Link(w, node, entering)
 	case *ast.CrossReference:
 		link := &ast.Link{Destination: append([]byte("#"), node.Destination...)}
-		r.link(w, link, entering)
+		r.Link(w, link, entering)
 	case *ast.Citation:
-		r.citation(w, node)
+		r.Citation(w, node)
 	case *ast.Image:
 		if r.opts.Flags&SkipImages != 0 {
 			return ast.SkipChildren
 		}
-		r.image(w, node, entering)
+		r.Image(w, node, entering)
 	case *ast.Code:
-		r.code(w, node)
+		r.Code(w, node)
 	case *ast.CodeBlock:
-		r.codeBlock(w, node)
+		r.CodeBlock(w, node)
 	case *ast.Caption:
-		r.caption(w, node, entering)
+		r.Caption(w, node, entering)
 	case *ast.CaptionFigure:
-		r.captionFigure(w, node, entering)
+		r.CaptionFigure(w, node, entering)
 	case *ast.Document:
 		// do nothing
 	case *ast.Paragraph:
-		r.paragraph(w, node, entering)
+		r.Paragraph(w, node, entering)
 	case *ast.HTMLSpan:
-		r.htmlSpan(w, node)
+		r.HTMLSpan(w, node)
 	case *ast.HTMLBlock:
-		r.htmlBlock(w, node)
+		r.HTMLBlock(w, node)
 	case *ast.Heading:
-		r.heading(w, node, entering)
+		r.Heading(w, node, entering)
 	case *ast.HorizontalRule:
-		r.horizontalRule(w, node)
+		r.HorizontalRule(w, node)
 	case *ast.List:
-		r.list(w, node, entering)
+		r.List(w, node, entering)
 	case *ast.ListItem:
-		r.listItem(w, node, entering)
+		r.ListItem(w, node, entering)
 	case *ast.Table:
-		tag := tagWithAttributes("<table", BlockAttrs(node))
-		r.outOneOfCr(w, entering, tag, "</table>")
+		tag := TagWithAttributes("<table", BlockAttrs(node))
+		r.OutOneOfCr(w, entering, tag, "</table>")
 	case *ast.TableCell:
-		r.tableCell(w, node, entering)
+		r.TableCell(w, node, entering)
 	case *ast.TableHeader:
-		r.outOneOfCr(w, entering, "<thead>", "</thead>")
+		r.OutOneOfCr(w, entering, "<thead>", "</thead>")
 	case *ast.TableBody:
-		r.tableBody(w, node, entering)
+		r.TableBody(w, node, entering)
 	case *ast.TableRow:
-		r.outOneOfCr(w, entering, "<tr>", "</tr>")
+		r.OutOneOfCr(w, entering, "<tr>", "</tr>")
 	case *ast.TableFooter:
-		r.outOneOfCr(w, entering, "<tfoot>", "</tfoot>")
+		r.OutOneOfCr(w, entering, "<tfoot>", "</tfoot>")
 	case *ast.Math:
-		r.outOneOf(w, true, `<span class="math inline">\(`, `\)</span>`)
+		r.OutOneOf(w, true, `<span class="math inline">\(`, `\)</span>`)
 		EscapeHTML(w, node.Literal)
-		r.outOneOf(w, false, `<span class="math inline">\(`, `\)</span>`)
+		r.OutOneOf(w, false, `<span class="math inline">\(`, `\)</span>`)
 	case *ast.MathBlock:
-		r.outOneOf(w, entering, `<p><span class="math display">\[`, `\]</span></p>`)
+		r.OutOneOf(w, entering, `<p><span class="math display">\[`, `\]</span></p>`)
 		if entering {
 			EscapeHTML(w, node.Literal)
 		}
 	case *ast.DocumentMatter:
-		r.matter(w, node, entering)
+		r.DocumentMatter(w, node, entering)
 	case *ast.Callout:
-		r.callout(w, node)
+		r.Callout(w, node)
 	case *ast.Index:
-		r.index(w, node)
+		r.Index(w, node)
 	case *ast.Subscript:
-		r.outOneOf(w, true, "<sub>", "</sub>")
+		r.OutOneOf(w, true, "<sub>", "</sub>")
 		if entering {
 			Escape(w, node.Literal)
 		}
-		r.outOneOf(w, false, "<sub>", "</sub>")
+		r.OutOneOf(w, false, "<sub>", "</sub>")
 	case *ast.Superscript:
-		r.outOneOf(w, true, "<sup>", "</sup>")
+		r.OutOneOf(w, true, "<sup>", "</sup>")
 		if entering {
 			Escape(w, node.Literal)
 		}
-		r.outOneOf(w, false, "<sup>", "</sup>")
+		r.OutOneOf(w, false, "<sup>", "</sup>")
 	case *ast.Footnotes:
 		// nothing by default; just output the list.
 	default:
@@ -1041,7 +1151,7 @@ func (r *Renderer) RenderHeader(w io.Writer, ast ast.Node) {
 // RenderFooter writes HTML document footer.
 func (r *Renderer) RenderFooter(w io.Writer, _ ast.Node) {
 	if r.documentMatter != ast.DocumentMatterNone {
-		r.outs(w, "</section>\n")
+		r.Outs(w, "</section>\n")
 	}
 
 	if r.opts.Flags&CompletePage == 0 {
@@ -1315,7 +1425,8 @@ func BlockAttrs(node ast.Node) []string {
 	return s
 }
 
-func tagWithAttributes(name string, attrs []string) string {
+// TagWithAttributes creates a HTML tag with a given name and attributes
+func TagWithAttributes(name string, attrs []string) string {
 	s := name
 	if len(attrs) > 0 {
 		s += " " + strings.Join(attrs, " ")
diff --git a/vendor/github.com/gomarkdown/markdown/parser/block.go b/vendor/github.com/gomarkdown/markdown/parser/block.go
index a0b80991..5ef55e98 100644
--- a/vendor/github.com/gomarkdown/markdown/parser/block.go
+++ b/vendor/github.com/gomarkdown/markdown/parser/block.go
@@ -1074,10 +1074,14 @@ func isBackslashEscaped(data []byte, i int) bool {
 func (p *Parser) tableHeader(data []byte) (size int, columns []ast.CellAlignFlags, table ast.Node) {
 	i := 0
 	colCount := 1
+	headerIsUnderline := true
 	for i = 0; i < len(data) && data[i] != '\n'; i++ {
 		if data[i] == '|' && !isBackslashEscaped(data, i) {
 			colCount++
 		}
+		if data[i] != '-' && data[i] != ' ' && data[i] != ':' && data[i] != '|' {
+			headerIsUnderline = false
+		}
 	}
 
 	// doesn't look like a table header
@@ -1097,10 +1101,18 @@ func (p *Parser) tableHeader(data []byte) (size int, columns []ast.CellAlignFlag
 		colCount--
 	}
 
+	// if the header looks like a underline, then we omit the header
+	// and parse the first line again as underline
+	if headerIsUnderline {
+		header = nil
+		i = 0
+	} else {
+		i++ // move past newline
+	}
+
 	columns = make([]ast.CellAlignFlags, colCount)
 
 	// move on to the header underline
-	i++
 	if i >= len(data) {
 		return
 	}
@@ -1175,8 +1187,10 @@ func (p *Parser) tableHeader(data []byte) (size int, columns []ast.CellAlignFlag
 
 	table = &ast.Table{}
 	p.addBlock(table)
-	p.addBlock(&ast.TableHeader{})
-	p.tableRow(header, columns, true)
+	if header != nil {
+		p.addBlock(&ast.TableHeader{})
+		p.tableRow(header, columns, true)
+	}
 	size = skipCharN(data, i, '\n', 1)
 	return
 }
diff --git a/vendor/github.com/mattermost/mattermost-server/v5/model/channel_sidebar.go b/vendor/github.com/mattermost/mattermost-server/v5/model/channel_sidebar.go
index 6a79593c..d05c6c9d 100644
--- a/vendor/github.com/mattermost/mattermost-server/v5/model/channel_sidebar.go
+++ b/vendor/github.com/mattermost/mattermost-server/v5/model/channel_sidebar.go
@@ -6,6 +6,7 @@ package model
 import (
 	"encoding/json"
 	"io"
+	"regexp"
 )
 
 type SidebarCategoryType string
@@ -109,3 +110,15 @@ func (o OrderedSidebarCategories) ToJson() []byte {
 		return b
 	}
 }
+
+var categoryIdPattern = regexp.MustCompile("(favorites|channels|direct_messages)_[a-z0-9]{26}_[a-z0-9]{26}")
+
+func IsValidCategoryId(s string) bool {
+	// Category IDs can either be regular IDs
+	if IsValidId(s) {
+		return true
+	}
+
+	// Or default categories can follow the pattern {type}_{userID}_{teamID}
+	return categoryIdPattern.MatchString(s)
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/v5/model/config.go b/vendor/github.com/mattermost/mattermost-server/v5/model/config.go
index f50bbf29..42863ead 100644
--- a/vendor/github.com/mattermost/mattermost-server/v5/model/config.go
+++ b/vendor/github.com/mattermost/mattermost-server/v5/model/config.go
@@ -342,6 +342,9 @@ type ServiceSettings struct {
 	EnableAPIChannelDeletion                          *bool
 	EnableLocalMode                                   *bool
 	LocalModeSocketLocation                           *string
+	EnableAWSMetering                                 *bool
+	ThreadAutoFollow                                  *bool   `access:"experimental"`
+	ManagedResourcePaths                              *string `access:"environment,write_restrictable,cloud_restrictable"`
 }
 
 func (s *ServiceSettings) SetDefaults(isUpdate bool) {
@@ -755,6 +758,18 @@ func (s *ServiceSettings) SetDefaults(isUpdate bool) {
 	if s.LocalModeSocketLocation == nil {
 		s.LocalModeSocketLocation = NewString(LOCAL_MODE_SOCKET_PATH)
 	}
+
+	if s.EnableAWSMetering == nil {
+		s.EnableAWSMetering = NewBool(false)
+	}
+
+	if s.ThreadAutoFollow == nil {
+		s.ThreadAutoFollow = NewBool(true)
+	}
+
+	if s.ManagedResourcePaths == nil {
+		s.ManagedResourcePaths = NewString("")
+	}
 }
 
 type ClusterSettings struct {
diff --git a/vendor/github.com/mattermost/mattermost-server/v5/model/file_info.go b/vendor/github.com/mattermost/mattermost-server/v5/model/file_info.go
index 4b71f5a8..aded5be9 100644
--- a/vendor/github.com/mattermost/mattermost-server/v5/model/file_info.go
+++ b/vendor/github.com/mattermost/mattermost-server/v5/model/file_info.go
@@ -36,22 +36,23 @@ type GetFileInfosOptions struct {
 }
 
 type FileInfo struct {
-	Id              string `json:"id"`
-	CreatorId       string `json:"user_id"`
-	PostId          string `json:"post_id,omitempty"`
-	CreateAt        int64  `json:"create_at"`
-	UpdateAt        int64  `json:"update_at"`
-	DeleteAt        int64  `json:"delete_at"`
-	Path            string `json:"-"` // not sent back to the client
-	ThumbnailPath   string `json:"-"` // not sent back to the client
-	PreviewPath     string `json:"-"` // not sent back to the client
-	Name            string `json:"name"`
-	Extension       string `json:"extension"`
-	Size            int64  `json:"size"`
-	MimeType        string `json:"mime_type"`
-	Width           int    `json:"width,omitempty"`
-	Height          int    `json:"height,omitempty"`
-	HasPreviewImage bool   `json:"has_preview_image,omitempty"`
+	Id              string  `json:"id"`
+	CreatorId       string  `json:"user_id"`
+	PostId          string  `json:"post_id,omitempty"`
+	CreateAt        int64   `json:"create_at"`
+	UpdateAt        int64   `json:"update_at"`
+	DeleteAt        int64   `json:"delete_at"`
+	Path            string  `json:"-"` // not sent back to the client
+	ThumbnailPath   string  `json:"-"` // not sent back to the client
+	PreviewPath     string  `json:"-"` // not sent back to the client
+	Name            string  `json:"name"`
+	Extension       string  `json:"extension"`
+	Size            int64   `json:"size"`
+	MimeType        string  `json:"mime_type"`
+	Width           int     `json:"width,omitempty"`
+	Height          int     `json:"height,omitempty"`
+	HasPreviewImage bool    `json:"has_preview_image,omitempty"`
+	MiniPreview     *[]byte `json:"mini_preview"` // declared as *[]byte to avoid postgres/mysql differences in deserialization
 }
 
 func (fi *FileInfo) ToJson() string {
diff --git a/vendor/github.com/mattermost/mattermost-server/v5/model/thread.go b/vendor/github.com/mattermost/mattermost-server/v5/model/thread.go
new file mode 100644
index 00000000..969a599e
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/v5/model/thread.go
@@ -0,0 +1,38 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+)
+
+type Thread struct {
+	PostId       string      `json:"id"`
+	ChannelId    string      `json:"channel_id"`
+	ReplyCount   int64       `json:"reply_count"`
+	LastReplyAt  int64       `json:"last_reply_at"`
+	Participants StringArray `json:"participants"`
+}
+
+func (o *Thread) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func (o *Thread) Etag() string {
+	return Etag(o.PostId, o.LastReplyAt)
+}
+
+type ThreadMembership struct {
+	PostId      string `json:"post_id"`
+	UserId      string `json:"user_id"`
+	Following   bool   `json:"following"`
+	LastViewed  int64  `json:"last_view_at"`
+	LastUpdated int64  `json:"last_update_at"`
+}
+
+func (o *ThreadMembership) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/v5/model/utils.go b/vendor/github.com/mattermost/mattermost-server/v5/model/utils.go
index 2ab71090..9a7ab229 100644
--- a/vendor/github.com/mattermost/mattermost-server/v5/model/utils.go
+++ b/vendor/github.com/mattermost/mattermost-server/v5/model/utils.go
@@ -36,6 +36,26 @@ type StringInterface map[string]interface{}
 type StringMap map[string]string
 type StringArray []string
 
+func (sa StringArray) Remove(input string) StringArray {
+	for index := range sa {
+		if sa[index] == input {
+			ret := make(StringArray, 0, len(sa)-1)
+			ret = append(ret, sa[:index]...)
+			return append(ret, sa[index+1:]...)
+		}
+	}
+	return sa
+}
+
+func (sa StringArray) Contains(input string) bool {
+	for index := range sa {
+		if sa[index] == input {
+			return true
+		}
+	}
+
+	return false
+}
 func (sa StringArray) Equals(input StringArray) bool {
 
 	if len(sa) != len(input) {
diff --git a/vendor/github.com/mattermost/mattermost-server/v5/model/version.go b/vendor/github.com/mattermost/mattermost-server/v5/model/version.go
index 11e0427a..aba587f7 100644
--- a/vendor/github.com/mattermost/mattermost-server/v5/model/version.go
+++ b/vendor/github.com/mattermost/mattermost-server/v5/model/version.go
@@ -13,6 +13,7 @@ import (
 // It should be maintained in chronological order with most current
 // release at the front of the list.
 var versions = []string{
+	"5.29.0",
 	"5.28.0",
 	"5.27.0",
 	"5.26.0",
diff --git a/vendor/github.com/mattn/godown/godown.go b/vendor/github.com/mattn/godown/godown.go
index 5f73743f..5aae9690 100644
--- a/vendor/github.com/mattn/godown/godown.go
+++ b/vendor/github.com/mattn/godown/godown.go
@@ -346,6 +346,22 @@ func walk(node *html.Node, w io.Writer, nest int, option *Option) {
 					fmt.Fprint(w, "\n\n")
 				}
 			default:
+				if option == nil || option.CustomRules == nil {
+					walk(c, w, nest, option)
+					break
+				}
+
+				foundCustom := false
+				for _, cr := range option.CustomRules {
+					if tag, customWalk := cr.Rule(walk); strings.ToLower(c.Data) == tag {
+						customWalk(c, w, nest, option)
+						foundCustom = true
+					}
+				}
+
+				if foundCustom {
+					break
+				}
 				walk(c, w, nest, option)
 			}
 		default:
@@ -354,11 +370,27 @@ func walk(node *html.Node, w io.Writer, nest int, option *Option) {
 	}
 }
 
+// WalkFunc type is an signature for functions traversing HTML nodes
+type WalkFunc func(node *html.Node, w io.Writer, nest int, option *Option)
+
+// CustomRule is an interface to define custom conversion rules
+//
+// Rule method accepts `next WalkFunc` as an argument, which `customRule` should call
+// to let walk function continue parsing the content inside the HTML tag.
+// It returns a tagName to indicate what HTML element this `customRule` handles and the `customRule`
+// function itself, where conversion logic should reside.
+//
+// See example TestRule implementation in godown_test.go
+type CustomRule interface {
+	Rule(next WalkFunc) (tagName string, customRule WalkFunc)
+}
+
 // Option is optional information for Convert.
 type Option struct {
-	GuessLang func(string) (string, error)
-	Script    bool
-	Style     bool
+	GuessLang   func(string) (string, error)
+	Script      bool
+	Style       bool
+	CustomRules []CustomRule
 }
 
 // Convert convert HTML to Markdown. Read HTML from r and write to w.
diff --git a/vendor/github.com/missdeer/golib/LICENSE b/vendor/github.com/missdeer/golib/LICENSE
index 0d9b5ada..8000a6fa 100644
--- a/vendor/github.com/missdeer/golib/LICENSE
+++ b/vendor/github.com/missdeer/golib/LICENSE
@@ -1,21 +1,504 @@
-MIT License
-
-Copyright (c) 2017 DForD Software
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
+                  GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 2.1, February 1999
+
+ Copyright (C) 1991, 1999 Free Software Foundation, Inc.
+ 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+[This is the first released version of the Lesser GPL.  It also counts
+ as the successor of the GNU Library Public License, version 2, hence
+ the version number 2.1.]
+
+                            Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+Licenses are intended to guarantee your freedom to share and change
+free software--to make sure the software is free for all its users.
+
+  This license, the Lesser General Public License, applies to some
+specially designated software packages--typically libraries--of the
+Free Software Foundation and other authors who decide to use it.  You
+can use it too, but we suggest you first think carefully about whether
+this license or the ordinary General Public License is the better
+strategy to use in any particular case, based on the explanations below.
+
+  When we speak of free software, we are referring to freedom of use,
+not price.  Our General Public Licenses are designed to make sure that
+you have the freedom to distribute copies of free software (and charge
+for this service if you wish); that you receive source code or can get
+it if you want it; that you can change the software and use pieces of
+it in new free programs; and that you are informed that you can do
+these things.
+
+  To protect your rights, we need to make restrictions that forbid
+distributors to deny you these rights or to ask you to surrender these
+rights.  These restrictions translate to certain responsibilities for
+you if you distribute copies of the library or if you modify it.
+
+  For example, if you distribute copies of the library, whether gratis
+or for a fee, you must give the recipients all the rights that we gave
+you.  You must make sure that they, too, receive or can get the source
+code.  If you link other code with the library, you must provide
+complete object files to the recipients, so that they can relink them
+with the library after making changes to the library and recompiling
+it.  And you must show them these terms so they know their rights.
+
+  We protect your rights with a two-step method: (1) we copyright the
+library, and (2) we offer you this license, which gives you legal
+permission to copy, distribute and/or modify the library.
+
+  To protect each distributor, we want to make it very clear that
+there is no warranty for the free library.  Also, if the library is
+modified by someone else and passed on, the recipients should know
+that what they have is not the original version, so that the original
+author's reputation will not be affected by problems that might be
+introduced by others.
+
+  Finally, software patents pose a constant threat to the existence of
+any free program.  We wish to make sure that a company cannot
+effectively restrict the users of a free program by obtaining a
+restrictive license from a patent holder.  Therefore, we insist that
+any patent license obtained for a version of the library must be
+consistent with the full freedom of use specified in this license.
+
+  Most GNU software, including some libraries, is covered by the
+ordinary GNU General Public License.  This license, the GNU Lesser
+General Public License, applies to certain designated libraries, and
+is quite different from the ordinary General Public License.  We use
+this license for certain libraries in order to permit linking those
+libraries into non-free programs.
+
+  When a program is linked with a library, whether statically or using
+a shared library, the combination of the two is legally speaking a
+combined work, a derivative of the original library.  The ordinary
+General Public License therefore permits such linking only if the
+entire combination fits its criteria of freedom.  The Lesser General
+Public License permits more lax criteria for linking other code with
+the library.
+
+  We call this license the "Lesser" General Public License because it
+does Less to protect the user's freedom than the ordinary General
+Public License.  It also provides other free software developers Less
+of an advantage over competing non-free programs.  These disadvantages
+are the reason we use the ordinary General Public License for many
+libraries.  However, the Lesser license provides advantages in certain
+special circumstances.
+
+  For example, on rare occasions, there may be a special need to
+encourage the widest possible use of a certain library, so that it becomes
+a de-facto standard.  To achieve this, non-free programs must be
+allowed to use the library.  A more frequent case is that a free
+library does the same job as widely used non-free libraries.  In this
+case, there is little to gain by limiting the free library to free
+software only, so we use the Lesser General Public License.
+
+  In other cases, permission to use a particular library in non-free
+programs enables a greater number of people to use a large body of
+free software.  For example, permission to use the GNU C Library in
+non-free programs enables many more people to use the whole GNU
+operating system, as well as its variant, the GNU/Linux operating
+system.
+
+  Although the Lesser General Public License is Less protective of the
+users' freedom, it does ensure that the user of a program that is
+linked with the Library has the freedom and the wherewithal to run
+that program using a modified version of the Library.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.  Pay close attention to the difference between a
+"work based on the library" and a "work that uses the library".  The
+former contains code derived from the library, whereas the latter must
+be combined with the library in order to run.
+
+                  GNU LESSER GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License Agreement applies to any software library or other
+program which contains a notice placed by the copyright holder or
+other authorized party saying it may be distributed under the terms of
+this Lesser General Public License (also called "this License").
+Each licensee is addressed as "you".
+
+  A "library" means a collection of software functions and/or data
+prepared so as to be conveniently linked with application programs
+(which use some of those functions and data) to form executables.
+
+  The "Library", below, refers to any such software library or work
+which has been distributed under these terms.  A "work based on the
+Library" means either the Library or any derivative work under
+copyright law: that is to say, a work containing the Library or a
+portion of it, either verbatim or with modifications and/or translated
+straightforwardly into another language.  (Hereinafter, translation is
+included without limitation in the term "modification".)
+
+  "Source code" for a work means the preferred form of the work for
+making modifications to it.  For a library, complete source code means
+all the source code for all modules it contains, plus any associated
+interface definition files, plus the scripts used to control compilation
+and installation of the library.
+
+  Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running a program using the Library is not restricted, and output from
+such a program is covered only if its contents constitute a work based
+on the Library (independent of the use of the Library in a tool for
+writing it).  Whether that is true depends on what the Library does
+and what the program that uses the Library does.
+
+  1. You may copy and distribute verbatim copies of the Library's
+complete source code as you receive it, in any medium, provided that
+you conspicuously and appropriately publish on each copy an
+appropriate copyright notice and disclaimer of warranty; keep intact
+all the notices that refer to this License and to the absence of any
+warranty; and distribute a copy of this License along with the
+Library.
+
+  You may charge a fee for the physical act of transferring a copy,
+and you may at your option offer warranty protection in exchange for a
+fee.
+
+  2. You may modify your copy or copies of the Library or any portion
+of it, thus forming a work based on the Library, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) The modified work must itself be a software library.
+
+    b) You must cause the files modified to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    c) You must cause the whole of the work to be licensed at no
+    charge to all third parties under the terms of this License.
+
+    d) If a facility in the modified Library refers to a function or a
+    table of data to be supplied by an application program that uses
+    the facility, other than as an argument passed when the facility
+    is invoked, then you must make a good faith effort to ensure that,
+    in the event an application does not supply such function or
+    table, the facility still operates, and performs whatever part of
+    its purpose remains meaningful.
+
+    (For example, a function in a library to compute square roots has
+    a purpose that is entirely well-defined independent of the
+    application.  Therefore, Subsection 2d requires that any
+    application-supplied function or table used by this function must
+    be optional: if the application does not supply it, the square
+    root function must still compute square roots.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Library,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Library, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote
+it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Library.
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+possible use to the public, we recommend making it free software that
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+
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+    Lesser General Public License for more details.
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+  library `Frob' (a library for tweaking knobs) written by James Random
+  Hacker.
+
+  <signature of Ty Coon>, 1 April 1990
+  Ty Coon, President of Vice
+
+That's all there is to it!
diff --git a/vendor/github.com/shazow/rateio/limiter.go b/vendor/github.com/shazow/rateio/limiter.go
index db5ae76c..a18ce3c1 100644
--- a/vendor/github.com/shazow/rateio/limiter.go
+++ b/vendor/github.com/shazow/rateio/limiter.go
@@ -7,7 +7,7 @@ import (
 
 const minInt = -int(^uint(0)>>1) - 1
 
-// The error returned when the read rate exceeds our specification.
+// ErrRateExceeded is the error returned when the read rate exceeds our specification.
 var ErrRateExceeded = errors.New("Read rate exceeded.")
 
 // Limiter is an interface for a rate limiter.
@@ -27,7 +27,7 @@ type simpleLimiter struct {
 }
 
 // NewSimpleLimiter creates a Limiter that restricts a given number of bytes per frequency.
-func NewSimpleLimiter(amount int, frequency time.Duration) Limiter {
+func NewSimpleLimiter(amount int, frequency time.Duration) *simpleLimiter {
 	return &simpleLimiter{
 		Amount:    amount,
 		Frequency: frequency,
@@ -38,7 +38,7 @@ func NewSimpleLimiter(amount int, frequency time.Duration) Limiter {
 // SimpleLimiter but adds a grace period at the start of the rate
 // limiting where it allows unlimited bytes to be read during that
 // period.
-func NewGracefulLimiter(amount int, frequency time.Duration, grace time.Duration) Limiter {
+func NewGracefulLimiter(amount int, frequency time.Duration, grace time.Duration) *simpleLimiter {
 	return &simpleLimiter{
 		Amount:    amount,
 		Frequency: frequency,
@@ -60,3 +60,12 @@ func (limit *simpleLimiter) Count(n int) error {
 	}
 	return nil
 }
+
+// Delay returns a channel that can be used to block until next window
+func (limit *simpleLimiter) Delay() <-chan time.Time {
+	waitTill := time.Now()
+	if limit.numRead >= limit.Amount {
+		waitTill = waitTill.Add(limit.Frequency)
+	}
+	return time.NewTimer(time.Until(waitTill)).C
+}
diff --git a/vendor/github.com/shazow/ssh-chat/sshd/auth.go b/vendor/github.com/shazow/ssh-chat/sshd/auth.go
index afa7271a..a1404135 100644
--- a/vendor/github.com/shazow/ssh-chat/sshd/auth.go
+++ b/vendor/github.com/shazow/ssh-chat/sshd/auth.go
@@ -19,6 +19,7 @@ type Auth interface {
 }
 
 // MakeAuth makes an ssh.ServerConfig which performs authentication against an Auth implementation.
+// TODO: Switch to using ssh.AuthMethod instead?
 func MakeAuth(auth Auth) *ssh.ServerConfig {
 	config := ssh.ServerConfig{
 		NoClientAuth: false,
diff --git a/vendor/github.com/shazow/ssh-chat/sshd/pty.go b/vendor/github.com/shazow/ssh-chat/sshd/pty.go
index 4443fd33..d3ed9ca8 100644
--- a/vendor/github.com/shazow/ssh-chat/sshd/pty.go
+++ b/vendor/github.com/shazow/ssh-chat/sshd/pty.go
@@ -6,8 +6,8 @@ import "encoding/binary"
 
 // parsePtyRequest parses the payload of the pty-req message and extracts the
 // dimensions of the terminal. See RFC 4254, section 6.2.
-func parsePtyRequest(s []byte) (width, height int, ok bool) {
-	_, s, ok = parseString(s)
+func parsePtyRequest(s []byte) (term string, width, height int, ok bool) {
+	term, s, ok = parseString(s)
 	if !ok {
 		return
 	}
diff --git a/vendor/github.com/shazow/ssh-chat/sshd/terminal.go b/vendor/github.com/shazow/ssh-chat/sshd/terminal.go
index 472b5c15..e8d99016 100644
--- a/vendor/github.com/shazow/ssh-chat/sshd/terminal.go
+++ b/vendor/github.com/shazow/ssh-chat/sshd/terminal.go
@@ -55,6 +55,29 @@ func (c sshConn) Name() string {
 	return c.User()
 }
 
+// EnvVar is an environment variable key-value pair
+type EnvVar struct {
+	Key   string
+	Value string
+}
+
+func (v EnvVar) String() string {
+	return v.Key + "=" + v.Value
+}
+
+// Env is a wrapper type around []EnvVar with some helper methods
+type Env []EnvVar
+
+// Get returns the latest value for a given key, or empty string if not found
+func (e Env) Get(key string) string {
+	for i := len(e) - 1; i >= 0; i-- {
+		if e[i].Key == key {
+			return e[i].Value
+		}
+	}
+	return ""
+}
+
 // Terminal extends ssh/terminal to include a close method
 type Terminal struct {
 	terminal.Terminal
@@ -63,9 +86,14 @@ type Terminal struct {
 
 	done      chan struct{}
 	closeOnce sync.Once
+
+	mu   sync.Mutex
+	env  []EnvVar
+	term string
 }
 
 // Make new terminal from a session channel
+// TODO: For v2, make a separate `Serve(ctx context.Context) error` method to activate the Terminal
 func NewTerminal(conn *ssh.ServerConn, ch ssh.NewChannel) (*Terminal, error) {
 	if ch.ChannelType() != "session" {
 		return nil, ErrNotSessionChannel
@@ -75,14 +103,15 @@ func NewTerminal(conn *ssh.ServerConn, ch ssh.NewChannel) (*Terminal, error) {
 		return nil, err
 	}
 	term := Terminal{
-		Terminal: *terminal.NewTerminal(channel, "Connecting..."),
+		Terminal: *terminal.NewTerminal(channel, ""),
 		Conn:     sshConn{conn},
 		Channel:  channel,
 
 		done: make(chan struct{}),
 	}
 
-	go term.listen(requests)
+	ready := make(chan struct{})
+	go term.listen(requests, ready)
 
 	go func() {
 		// Keep-Alive Ticker
@@ -103,7 +132,18 @@ func NewTerminal(conn *ssh.ServerConn, ch ssh.NewChannel) (*Terminal, error) {
 		}
 	}()
 
-	return &term, nil
+	// We need to wait for term.ready to acquire a shell before we return, this
+	// gives the SSH session a chance to populate the env vars and other state.
+	// TODO: Make the timeout configurable
+	// TODO: Use context.Context for abort/timeout in the future, will need to change the API.
+	select {
+	case <-ready: // shell acquired
+		return &term, nil
+	case <-term.done:
+		return nil, errors.New("terminal aborted")
+	case <-time.NewTimer(time.Minute).C:
+		return nil, errors.New("timed out starting terminal")
+	}
 }
 
 // NewSession Finds a session channel and make a Terminal from it
@@ -133,8 +173,9 @@ func (t *Terminal) Close() error {
 	return err
 }
 
-// Negotiate terminal type and settings
-func (t *Terminal) listen(requests <-chan *ssh.Request) {
+// listen negotiates the terminal type and state
+// ready is closed when the terminal is ready.
+func (t *Terminal) listen(requests <-chan *ssh.Request, ready chan<- struct{}) {
 	hasShell := false
 
 	for req := range requests {
@@ -146,13 +187,19 @@ func (t *Terminal) listen(requests <-chan *ssh.Request) {
 			if !hasShell {
 				ok = true
 				hasShell = true
+				close(ready)
 			}
 		case "pty-req":
-			width, height, ok = parsePtyRequest(req.Payload)
+			var term string
+			term, width, height, ok = parsePtyRequest(req.Payload)
 			if ok {
 				// TODO: Hardcode width to 100000?
 				err := t.SetSize(width, height)
 				ok = err == nil
+				// Save the term:
+				t.mu.Lock()
+				t.term = term
+				t.mu.Unlock()
 			}
 		case "window-change":
 			width, height, ok = parseWinchRequest(req.Payload)
@@ -161,6 +208,14 @@ func (t *Terminal) listen(requests <-chan *ssh.Request) {
 				err := t.SetSize(width, height)
 				ok = err == nil
 			}
+		case "env":
+			var v EnvVar
+			if err := ssh.Unmarshal(req.Payload, &v); err == nil {
+				t.mu.Lock()
+				t.env = append(t.env, v)
+				t.mu.Unlock()
+				ok = true
+			}
 		}
 
 		if req.WantReply {
@@ -168,3 +223,24 @@ func (t *Terminal) listen(requests <-chan *ssh.Request) {
 		}
 	}
 }
+
+// Env returns a list of environment key-values that have been set. They are
+// returned in the order that they have been set, there is no deduplication or
+// other pre-processing applied.
+func (t *Terminal) Env() Env {
+	t.mu.Lock()
+	defer t.mu.Unlock()
+	return Env(t.env)
+}
+
+// Term returns the terminal string value as set by the pty.
+// If there was no pty request, it falls back to the TERM value passed in as an
+// Env variable.
+func (t *Terminal) Term() string {
+	t.mu.Lock()
+	defer t.mu.Unlock()
+	if t.term != "" {
+		return t.term
+	}
+	return Env(t.env).Get("TERM")
+}
diff --git a/vendor/github.com/shazow/ssh-chat/sshd/terminal/terminal.go b/vendor/github.com/shazow/ssh-chat/sshd/terminal/terminal.go
index d6650bb1..ec04e8f1 100644
--- a/vendor/github.com/shazow/ssh-chat/sshd/terminal/terminal.go
+++ b/vendor/github.com/shazow/ssh-chat/sshd/terminal/terminal.go
@@ -10,6 +10,8 @@ import (
 	"strconv"
 	"sync"
 	"unicode/utf8"
+
+	"golang.org/x/text/width"
 )
 
 // EscapeCodes contains escape sequences that can be written to the terminal in
@@ -262,7 +264,7 @@ func (t *Terminal) moveCursorToPos(pos int) {
 		return
 	}
 
-	x := visualLength(t.prompt) + pos
+	x := visualLength(t.prompt) + visualLength(t.line[:pos])
 	y := x / t.termWidth
 	x = x % t.termWidth
 
@@ -351,6 +353,7 @@ func (t *Terminal) setLine(newLine []rune, newPos int) {
 		for i := len(newLine); i < len(t.line); i++ {
 			t.writeLine(space)
 		}
+		t.line = newLine
 		t.moveCursorToPos(newPos)
 	}
 	t.line = newLine
@@ -462,6 +465,10 @@ func visualLength(runes []rune) int {
 			inEscapeSeq = true
 		default:
 			length++
+			kind := width.LookupRune(r).Kind()
+			if kind == width.EastAsianFullwidth || kind == width.EastAsianWide {
+				length++
+			}
 		}
 	}