EsotericSoftware/spine-runtimes — pull request #315 by darionco (2014-10-15 07:49:38+00:00)
Title: [JS] Implements IkConstraints and per bone FlipTimelines

This implements IkConstraint + IkConstraintTimeline + FlipXTimeline + FlipYTimeline in JavaScript all based in the libGDX version of the runtime. Tested in pixi.js, also have a pending pull request there:
https://github.com/GoodBoyDigital/pixi.js/pull/1008