OpenVG-0.4.0: Changes

version 0.4.0 (13 Dec 2009):
  * LinearGradient type changed to be Vector4 VGfloat.
 
  * RadialGradient changed to (Vector4 VGfloat, VGfloat).

  * Removed Marshal and Unmarshal type classes, marshallBool and 
    unmarshalBool moved out of the BasicTypes module.

  * Type change for colorRampStops.

  * Name change - maxStops changed to maxColorRampStops.

  * PathType(..) changed to PathAbsRel(..).

  * Substantial changes to Haddock docs.

  * Error handling in VGU redone - the original code in 
    ErrorsInternal was taken wholesale from Sven Panne\'s 
    OpenGL binding to help me bootstrap OpenVG binding. 
    Regrettably I forgot to replace it or attribute it -
    I've now replaced it. Sincere apologies to Sven Panne.

version 0.3.0 (10 Dec 2009):
  * Changes to use the split OpenGL packages 

  * Added type coercions for the Size data type (these might not be ideal).


version 0.2.1 (10 Dec 2009):
  * .cabal file upper bounds for OpenGL and GLUT

  * Windows installation instructions updated.


version 0.2 (07 Jul 2009):
  * Updated to support ShivaVG version 0.2.1

  * ShivaVG 0.2.1 add support for
    - vgHardwareQuery 

  * ShivaVG 0.2.1 stubbed a number of functions that were previously missing
    - vgMask
    - vgChildImage
    - vgGetParent
    - vgColorMatrix
    - vgConvolve
    - vgSeparableConvolve
    - vgGaussianBlur
    - vgLookup
    - vgLookupSingle

    - vguComputeWarpQuadToSquare
    - vguComputeWarpSquareToQuad
    - vguComputeWarpQuadToQuad
 
version 0.1 (02 Feb 2009):
  * Support for ShivaVG version 0.2.0