* feat:new command "join" and "remove" to force join or remove avatar in your current team
* fix:change MaxAvatarsInTeam from 9 to 4
* feat:update & merge branch.Translate fix
* fix(command):fix remove command a stupid bug.Loop delete element bug.
* fix(command):fix join command. When adding avatars, repeat avatars skip and non repeat avatars join.
* fix(language):fix join command remove command translate
* fix(ReadMe):update README.md join and remove command.
* feat:new command "join" and "remove" to force join or remove avatar in your current team
* fix:change MaxAvatarsInTeam from 9 to 4
* feat:update & merge branch.Translate fix
* Fix the following issues:
1. HashMap non-thread-safe issus
2. Fix the same problem in pr621, but use a better implementation
Add the following functions:
1. There is now a language cache inside getLanguage to prepare for different languages corresponding to different time zones where the accounts in the server are located
* add /language command,each account has their own Locate