v 0.7

Remove %btn extender as it is not needed

Update Text Elements Page with updated documentation and deleting out extra/duplicate content.

Remove flex mixin from main mixin file and put into its own.

Give static column mixin break point variable values instead of hard value

extend the %reset to <dl> and update margin bottoms for dd:last-child

Rename "Basic Elements" to "Text Elements" in navigation/title of page.

Finalize documentation on the Text Elements Section

Fix error in designed radio button HTML (missing class input-Radio)

Add in pseudo values for inputs
:valid, :invalid, :required

Add mixins section to navigation, listing out all mixins included with brass tacks