Fixed cubemaps rendering (Skyboxes)
Removed useless enum
Added Quaternion::Normalize static method
Fixed global math include
Improved SparsePtr class

Added implicit conversion from a normal pointer to a sparse pointer
Added implicit conversion to boolean
Added implicit conversion to normal pointer
Added support for const pointers
Renamed Get/Set to GetPtr/SetPtr
Updated Freetype

Added 64bits MinGW binairies
Fixed PCX loader crash
Merge pull request #31 from Gawaboumga/master

Some changes
Moved comment
Added comments
Fixed Image::Get[Width|Height|Depth] returning 1 on invalid images
Removed useless line
Added a Size parameter to View class

Allowing independent from rendertarget size
Made Music class non copyable
Improved Music.cpp (Added comments)
Fixed sprites being rendered upside-down in 2D

This is still waiting for a fix because it will be upside-down in 3D
Improved error message
Fixed possible warning
Fixed possible warning
Made 2D nodes easier to use