Depth test disabled for 2D and only used on 3D; consequently LINES vs
TRIANGLES vs QUADS buffers drawing order maters... but blending also
works ok.

- Removed DrawQuad() function
- DrawBillboard() uses DrawBillboardRec()
- DrawPlane() uses RL_TRIANGLES
- DrawRectangleV() uses RL_TRIANGLES, that way, [shapes] module uses
only TRIANGLES buffers.

Support multiple texture formats (uncompressed and compressed)
Postprocessing shaders support
Model struct redefined and improved
Extended loading functions for Textures and Models
Simplified functions: DrawPlane(), DrawQuad()
Deleted functions: DrawPlaneEx(), DrawGizmoEx()
Now Text module only depends on Textures module
Shapes: Reviewed functions to low lines/triangles usage
Removed useless tabs and spaces around code

Corrected some bugs on the way...
Automatically convert textures to POT on RPI and WEB

This is a huge update. Check CHANGELOG for details

Set default raylib to use OpenGL 1.1 (compatibility issues on ATI cards)

We have three vertex buffers: lines, triangles and quads for textures.
Drawing in a desired order could become a nighmare... noww it seems it
works prety well...

View CHANGELOG for a detailed list of changes

Nearly a complete rework of Models module
Some teaks on multiple functions

Check CHANGELOG for the list of changes in this release!

View CHANGELOG for full list of changes

Some functions added (collision detection)
Check CHANGELOG for details