mixup rest lengths to use localLength
Merge pull request #412 from jtwigg/develop

mixup rest lengths to use localLength
early exit various keyframe actions for joints.
Merge pull request #413 from jtwigg/develop

early exit various keyframe actions for joints.
Fixes delay when playing first sound
Merge branch 'develop' of github.com:apportable/SpriteBuilder into develop
Fixes #421
Merge branch 'develop' of https://github.com/spritebuilder/SpriteBuilder into develop