Fix mistake in example code.
Rename 'properties' constructor parameter to 'object' in docs.
Add example to Item#contains(point) docs.
Add titles to Path.Constructors documentation examples.
Add Gradient class examples.
Improve GradientStop example code.
Improve Style example code.
Improve Color documentation.
Improve Curve documentation.
Improve PointText constructor examples.
Clean up Segment object constructor example.
Rename properties to object in Rectangle constructor docs.
Define more unit tests for Shape#contains().
Implement Item#_contains() with local coordinates, and have Item#contains() take Item#matrix into account.
Merge git://github.com/paperjs/paper.js