Merge tag '0.10.0' into development

Tagging version 0.10.0 0.10.0
create basic Path object
add methods to convert elements into path
add function to convert svg and group elements into path
update dependencies
fix bugs for path
add method addClass to SvgObject
add function styleSheet to svg to add possibles external stylesheets for SVG
prepare release 0.11.0
Merge branch 'release/0.11.0'