* New API endpoint: /api/blocklist where your site can pre-deliver muted
username lists for users before they enter the chat.
* Image sharing in DMs is allowed if either party is an operator.
* Consolidate all the Video flags (active, nsfw, mutual, mutualOpen)
into a bitmask flag (single integer)
* New video flag for when the source has muted their video, to show a
crossed out grey mic on their camera for other chatters
* Bugfixes around syncing the mute state for self and other videos when
videos are opened, closed and opened again
* Profile pictures on the DMs list
