Correct of copyrights.
Correct concept.
Remove unnecessary code from server; add processing of new protocol commands.
Add Connection class.
Add level support.
Connection Level class to command parsing.
Add multitrading; add removing lost players.
Simplify client.
Add class Connection to client.
Add mutex to Level class.
Add sending and receiving commands with server.
Client render refactoring.
Correct sprites files.
Change architecture of render system.
Corrects of collision detection; add support player as collider in it.