• added --multipass command line option which repeatedly applies optimizations like collapsing groups (by @dfilatov)
• exposed JSAPI as a factory method (by @mistakster)
• added removeDesc plugin (by @dwabyick), disabled by default
• removeUselessStrokeAndFill plugin is disabled by default since it's unable to check inherited properties
• transformations now apply to paths with arcs in plugins/convertPathData
• a lot of bug fixes mostly related to transformations