0.3.3

Switch to ES6 modules, provide jsnext:main entry.

0.3.2

Add UMD wrapper.

0.3.1

Add local PlaneConstraint, differentiate global BoundingPlaneConstraint.
Bug fixes.

0.3.0

Add AxisConstraint, PlaneConstraint.
Enable constraining multiple particles with PointConstraint.
Fix applying global constraints.

0.2.0

Add AngleConstraint, improve constraint application, simplify particle weighting.

0.1.0

Added particle weights, pinning, and tests.

Alpha

0.0.1

Add dist ..