Update hero object on World::Update
Add path finding to Tilemap
Allow GameObjects to follow a path
AnimatedObject: Allways SetFrame() on Update

Changes of orientation in GameObject::Update() now reflect directly, even if the object is not animated at the moment
Use the path finding in the script
Add a MovableObject that handles animation when moving
Hero is now a MovableObject
Add MovableObject.h to the Project
Add Scripting::ExecuteString
Add a live entry box for Lua commands
Rename sf_object files to MapObject
Rename sf_object to MapObject
Load object properties
Fix most warnings