v2.1.0

• Submenu support on dropdowns
• Affix JavaScript plugin
• Block level buttons
• State classes on table rows
• Improved disabled states on navs and dropdowns
• The navbar component is now white by default, with an optional class to darken it
• Improved prepended and appended inputs
• New base font-size and line-height
• Added variable for navbar collapse trigger point
• Fluid grid offsets
• Fluid grid system variables are no longer fixed percentages
• Removed LESS docs page