Update documentation
Prepare for gameobjects in OnClick and fix map initialization
Export GetCurrentMap() global function
Post InitComplete event
Better object positioning

Objects should no longer cover tiles under them
Fix map:GetGameObjects()

The returned temp. vector was destroyed by luabind before the iteration was complete. Fix this by returning a reference to an element of the tilemap object.
Fix object rendering

Objects are now rendered with respect to their y position (not just the integer part)
Post MouseMoved event
Add TileToScreenSize to convert without offsets
Add Show/HideHighlight functions to highlight objects
Highlight clickable objects