major refactoring:  - added 2 new element base classes - all rendered elements are now paths - added rounded rectangles - fixed animation to only redraw when needed
major refactoring: 
- added 2 new element base classes
- all rendered elements are now paths
- added rounded rectangles
- fixed animation to only redraw when needed

git-svn-id: 1480ed9eeae8ad7939024d1c38d64d1a40ec6245@19 4f656584-2f64-8888-3fab-3bd369ce20a5

Causata/canvg,evantill/canvg-clone