Description and comments
* Typo
* Some further drafts
* Taking out auth code
* Auth code updated to use custom handlers
* Minor debugging fix
+ Symmetrical actions: join-leave, enter-exit
* Typo fixed
* Fixed router bug, keepalive having undefined callbacks, userlist retrurning string ids instead of integer
* Made client-side work (well, almost)
* Protocol update (SSE events must be handled gently)
* Updated readme and test server