added 'data' property to SPEvent
added 'nextTween' and 'progress' properties
made SPDelayedInvocation repeatable
added 'repeatInvocationAtTarget' and 'tweenWithTarget' methods
deprecated 'initWithContentsOfMappedFile'
added 'touchWithTarget' and 'interactsWithTarget' methods
added 'region' property
added core graphics conversion methods
added 'hitTestObject'
rendered text now uses NSAttributedString for drawing
context improvements, OpenGL state cache fixes
indent fix
PVR data type checks
added SPTouchPhaseHover
added SPButtonState, button now uses states
SPTouchProcessor changes / additions
added 'upload' methods
use non pow2 textures, if unnecessary
bounds optimization
a bit of tidying