Separate core and icon css
DOCS: Fix static css
DOCS: Add customize feature
Improve icon-arrow and icon-chevron head
New Icon: icon-sort and icon-short-half
BUG FIX: Prevent blink transition when initial set and icon changes
Remove -ms- prefix from all icons
DOCS: Add icon-sort and icon-sort-half to icon list
New Icon: icon-check
New Icon: signal-three and signal-five
New Icon: angle and angle-double icon
Push to v0.2.0
DOCS: Update icon list
Merge pull request #1 from fians/v0.2.0-dev

Push to v0.2.0