- update to 3.2.0.0
- removed useless _service
* Updated OpenGL registry to r32749.
* Updated warning flag magic for GHC 8.0.

- update to 3.1.0.0
* Changed the type of GL_FALSE and GL_TRUE to GLboolean, leading to fewer
fromIntegral calls in user code.
* Added deprecated functions mkGLDEBUGPROC, mkGLDEBUGPROCAMD, mkGLDEBUGPROCARB,
mkGLDEBUGPROCKHR for gl compatibility.
* Updated OpenGL registry to r32348.

- update to 3.0.0.0
* Make the OpenGLRaw package even more similar to the gl package:
+ Use pattern synonyms for OpenGL enums.
+ Changed module name prefix from Graphics.Rendering.OpenGL.Raw to Graphics.GL.
+ Use slightly different type synonyms for GL type (introducing Fixed on
the way):
. CDouble => Double (for GLclampd, GLdouble)
. CFloat => Float (for GLclampf, GLfloat)
. CInt => Fixed (for GLclampx, GLfixed)
. CInt => Int32 (for GLint, GLsizei)
. CSChar => Int8 (for GLbyte)
. CShort => Int16 (for GLshort)
. CUChar => Word8 (for GLboolean, GLubyte)
. CUInt => Word32 (for GLbitfield, GLenum, GLhandleARB, GLuint)
. CUShort => Word16 (for GLushort)

- update to 2.6.1.1
* Relaxed upper version bound for transformers.