Protocol features (v1.4)

• ChannelState.IsEnterRestricted
• ChannelState.CanEnter
• UserState.TemporaryAccessTokens

[s3lph]

Generally, Protocol version v1.4 should be adopted. Users of matterbridge receive warnings regarding unsupported channel listeners when gumble (announcing v1.3) connects to a v1.4 server: 42wim/matterbridge#1817

"[WARNING]: This server has the ChannelListener feature enabled but your client version does not support it. This means that users might be listening to what you are saying in your channel without you noticing! You can solve this issue by upgrading to Mumble 1.4.0 or newer."