Correct errors and add SDL surface handling in texture manager
Shaders for text management
Add a texture non squared in size to see future problems
Add text and button widget
Add button widget to example rippler
Correct error for passing color list instead of unpacking them for color setters
Correct the mesh generation for triangles where triangles in one quad were not oiented in the same way
Added example with the creation of an earth planet
Remove useless mesh for textures in widget
Improve the Earth example
Add an Earth texture with Mercator projection?
Update the documentation
Add possibility to release textures in order to use multiple of them in different shaders
Correct error for import
Update the sprite example with new features and clean properties
Merge remote-tracking branch 'origin/testing' into testing