Add whitelist support for clipPath, @clip-path and @clip-rule. Refactor code a tiny bit.
Add whitelist support for clipPath, @clip-path and @clip-rule. Refactor code a tiny bit.

trentmillar/ddp-level-editor,ryanramage/svg-editor,trentmillar/ddp-level-editor,ryanramage/svg-editor,trentmillar/ddp-level-editor,ryanramage/svg-editor