Clean floor names
Merge branch 'develop' of https://github.com/Symptogen/Symptogen into develop
Try to make background shiver
Merge branch 'develop' into shivering
Begin shivering background
Merge branch 'develop' of github.com:Symptogen/Symptogen into develop
Separate enum PowerType and PowerState
fixes #113
Merge branch 'develop' of github.com:Symptogen/Symptogen into develop
Close #115 and work on #87
Movable objects are movable only with the sneeze.
fix #79
Merge branch 'develop' of https://github.com/Symptogen/Symptogen into develop
Update PhysicalEntity : dino doesn't slide along objects.
Some clean
Merge branch 'develop' of https://github.com/Symptogen/Symptogen into develop

Conflicts:
	assets/data.xml
	assets/map/level1.xml
	assets/map/level2.xml
	assets/map/sprites/Carrelage_Sample1_AMELIORE.png
	assets/map/sprites/basicFloor2x2.png
	assets/map/sprites/basicFloor_2x2.png
Add needed sprites
fixes #91
Merge branch 'develop' of https://github.com/Symptogen/Symptogen into develop

Conflicts:
	assets/map/level1.xml
Improve perfs : load only one time surfaces, animations, and collisions.
fix #104
fix #116
Merge branch 'develop' of https://github.com/Symptogen/Symptogen into develop
Close #105