Release 6

This update mostly contains improvements to the engine.

Features
Mouse over information is provided
Movement can be done with the mouse left click (no pathfinding yet)
Implemented a GameWorld() object to hold what used to be the game entity
Events are filled and emptied, rather than added and removed
State is tracked as a stack
A look function has been added
Improve CustomWorld(): can now fetch entities containing arbitrary components from a specific location.
Bug Fixes
Entering the debug menu no longer opens the drop menu
Minor Updates
Update Readme