Watcher list and joined/left messages

TheBroth is growing up! We now have the long awaited “joined/left” messages when users enter or leave a room!

This greatly facilitates communication. Also, if they time out - visually indicated by fading of their name - they do not just disappear, but they are then listed as “watching”. Watchers are only listed as watching if they really still have a window open showing this room.

When they close the window or go to a different room, they’ll be indicated as having left.