Add option to suppress XML preamble in toSVG method.
Merge pull request #415 from Arthaey/master

Add option to suppress XML preamble in toSVG method
Add support for animating 2nd level object properties
Fix bug in loadFromJSON
Build distribution
Doc fixes
Fix free drawing path initialization
Fix build minification. Closes #417
Remove polygon offsetting fix which broke some SVG shapes
Merge remote-tracking branch 'origins/master' into sketch