Sync puppets when they send a message

Fixes #30, Fixes #34

bridge/portal.go

@@ -418,7 +418,9 @@ func (p *Portal) handleDiscordMessageCreate(user *User, msg *discordgo.Message)
 		return
 	}
 
-	intent := p.bridge.GetPuppetByID(msg.Author.ID).IntentFor(p)
+	puppet := p.bridge.GetPuppetByID(msg.Author.ID)
+	puppet.SyncContact(user)
+	intent := puppet.IntentFor(p)
 
 	if msg.Content != "" {
 		content := &event.MessageEventContent{

bridge/puppet.go

@@ -164,7 +164,10 @@ func (p *Puppet) CustomIntent() *appservice.IntentAPI {
 
 func (p *Puppet) updatePortalMeta(meta func(portal *Portal)) {
 	for _, portal := range p.bridge.GetAllPortalsByID(p.ID) {
+		// Get room create lock to prevent races between receiving contact info and room creation.
+		portal.roomCreateLock.Lock()
 		meta(portal)
+		portal.roomCreateLock.Unlock()
 	}
 }