Sprite2D now uses a triangles strip
Change uniforms system
Merge pull request #4 from tomaka/new-uniforms-system

Change uniforms system
Add vertex buffer mapping
Update README files
Remove gitter badge
Add more implementation for UniformValue
Change API to enable samplers
Merge pull request #5 from tomaka/samplers

Change API to enable samplers
Add DrawParameters in DrawCommand
Merge pull request #6 from tomaka/params

Add DrawParameters in DrawCommand
Fix viewport not being cached properly
Caching glEnable states
Add blending_function to DrawParameters
Add line_width to DrawParameters
Remove old state changes
Program::new returns a ProgramCreationError
Better handling for glGenerateMipmap
Default glutin to no default feature
Update for glutin