Switched over to libxml for SVG parsing
Added basic support for <rect> and <polygon>.
Removed saver-52.svg from xcodeproj
Merge pull request #2 from hjaltij/libxml-transition

Libxml transition
Cleanup
Cleanup
Made elements within groups inherit parent attributes
Fixed build error
Added support for transformations
Cleanup
path comparison is expensive, switched map table to use pointer comparison
Made nested transformations concatenate
Nothing really