2.0.22 beta

Fixes

• Added a workaround for node-sass still not getting updated to 3.6.x - to be able to import variables
  as listed in the README
• Fix large border-radius not applied in iOS, up the small to 4pt (to differ from Android defaults) (thanks @kulikala)
• Remove the default Image margin - not needed and confusing
• Sync app and app-compat, some housekeeping