v 0.9.0.7

New flipping helper classes:
  silent classes
  mixin
  helper class file

New mixin for styling scroll bars

New silent classes for type rendering:
  text-rendering: optimizeLegibility & optimizeSpeed
  text-size-adjust (add -moz- prefix)

Add new base styling for <menu>
  combine navs, lists and menu into 1 new directory