Antimony 0.7.8

Features:

• Human-readable file format
  • Friendlier for version control, manual editing.
  • Older files will be automatically upgraded.
• Set colour HSB node (thanks, RobotGrrl)
• Huge speed-up in loading large files (about 20X).
• Minor solver speed-up using restrict keyword.

Bugfixes:

• Fixed memory leak in applying Transform objects.
• Don't spawn huge number of threads when loading complex files.
• If rendering is interrupted, don't leak images.
• Correct interface between QGraphicsItem and OpenGL.
• Fix huge leak of images and OpenGL textures.