The channel is no longer required for sending a message
All user accounts now store which channel they are in to make things simpler
Added the concept of 'sender converters' which is used to get the CG user which sent a command for example
No longer allowing getAs() for the same user type
SendChatMessage now takes a ChatMessage param (with a builder)
Code cleanup
/schrestart error msg added
Whole plugin update made async (the plugin list)
Javadoc additions
