v2.0

Typeset 2.0 adjusts line-heights of all elements to align on a 1.5em baseline grid. It’s not overly strict, so inline images can push the baseline off a bit, but all text should align nicely.

• Added CSS variables for colors (with fallback defaults for IE 11)
• Removed outdated and unnecessary vender prefixes
• Added optional typeset-baseline class for debugging the baseline grid
• Added left border to block quotes (add optional typeset-wysiwyg class for old style)

v0.9.4

Added `div` to the set of elements that have a line-height set.

This helps WYSIWYG editors that use <div>s instead of <p>s for normal
text.