Changelog for Rasterific-0.2

-*-change-log-*- v0.2 April 2014 * Adding an ellipse helper. * Adding a polyline helper. * Adding a polygon helper. * Adding monoid instance for Drawing. * Fixing some stroking bug with cubic bezier curve. * Fixing some documentation snippets. * Adding a rounded rectangle helper. * Added a even-odd filling rule. * Added an offset for dashed stroking. * Added a transformation module. * Changed the Transformable typeclass, splitted it in two. * Added a dumping function for the constructed drawing. * Adding an image texture with bilinear filtering. * Adding an image helper. * Made some modest performance enhancements. v0.1 February 2014 * Initial version.