Merge remote-tracking branch 'origin/development' 3/27/2013
Added signum convenience function.
Merge pull request #3 from GarageGames/development

Update
ParticleAsset/Emitter/Player TorqueScript additions

- Changed ParticleAsset "LifeScale" field to "LifetimeScale" to match
base and variation graph field naming convention

- Added missing TorqueScript bindings to certain fields for
ParticleAssetEmitter and ParticlePlayer
Fixed signum logic.
Merge pull request #56 from eightyeight/math-sign-function

Added signum convenience function
Merge pull request #68 from lilligreen/particles

added missing ParticleAsset/Emitter/Player TorqueScript methods.
ImageWidth and ImageHeight were inverted in calculateImage function
Merge pull request #70 from capnlove/ImageAsset_Typo

ImageWidth and ImageHeight were inverted in calculateImage function
Final CompositeSprite Fix.
PickPoint, PickArea and PickRay now work in all scenarios, regardless of CompositeSprite position, rotation or camera zoom level.
Merge pull request #69 from capnlove/CompositeSprite_Fix

CompositeSprite Fix - All Picking modes functional