Milestone beta3

Goals for this release:

• thread safety, stability
  • all objects based on GObject to eliminate hackish GIL work-arounds
  • code refactored to Genie
• full cross-platform windowing and input
  • replace platform specific code with the GIMP Drawing Kit (gdk)
  • migrate old soy.Window to soy.windows.*
  • window classes to support resize and closure callbacks
  • input callbacks to handle button/key press, hold, and release
  • input callbacks to handle axis and pointer location
• new rendering features
  • normal (dot3) texture maps (GHOP#335)
  • billboard meshes (GHOP#322)
  • liquid rendering (GHOP#336)
  • sun mesh for lights (GHOP#337)
  • 8 new standard materials (GHOP#320)
• more scenes
  • soy.Scene moved to soy.scenes.Scene (#903)
  • move physics processing from _coreLoop to Scene (#930)
  • additional scenes to add elements such as plane/heightmap collision (#928 #929)
  • will later offer optimized collision and rendering
• better .soy format
  • texture wavelet compression
  • mesh and material support added
• unit tests
  • Mesh vertex/face ordering (GHOP#326)
  • Window creation/destruction, placement, title change
  • Widget stacking, resizing, reparenting
  • Color comparison, math, and hex string
  • Axis rotation

Features this release is unlikely to include:

• Audio
• Network
• SVG textures
• Behavior (aka, AI)
• Skeletal mesh deformation