Merge branch 'develop', read more

This merge covers mostly back-end refactoring, including splitting
Character into Renderable and BaseCharacter, as well as creating the
manager interface.

todo.txt

@@ -1,12 +0,0 @@
-TODO: Get the rooms working, even if only via hotkeys
-TODO: Fix shoddy movement
-
-TODO: Remove the big "Shut Down" button
-TODO: Make a way for the server owner to control the server directly
-TODO: Move the map system into it's own namespace?
-TODO: The TileSheet class should implement the surface itself
-TODO: make the whole thing more fault tolerant
-TODO: Authentication
-
-TODO: Time delay for requesting region packets
-TODO: A proper logging system