Alpha Version 0.5.0

Changes

• Added API that enables other mods to sync over multiplayer! (Big thanks to @kremnev8!)
• Fixed a bug that caused sorters to break when a client built a belt under preexisting sorters.
• Fixed a bug that resulted in the client getting an error after disconnecting from a game that the host left.
• Refactored session architecture (big changes to codebase but should be seamless to users)