Improved Holy grail + better objects & characters handling + changed map management

Characters

• Level's characters are registered in the metadata, for example: characters: 1 enemy main
• Character's skin can be specified in the metadata arcade_skins: cook :characters:Female/Female 14-1.png
• An enemy is not special anymore but an object like any other character

Map

• Map size is now extracted from the tmx file
• A level has no longer only one Map object but a dict of Map to better suit multi maps levels and improve management for objects and characters

Objects

• Objects do not need to be put in the metadata
• you can give an attribute to an object by using the custom properties in Tiled (example in teleport and key)

Other

• Holy grail is greatly improved"