Change: Use PostCSS 6 API.
Fix: incorrect output when using both > and >= (or similar).(#12)
Fix: Pixels rounding errors in fractional pixels media queries.
Add: Support for < and > without =.
Change: Use PostCSS 5.0 API.
Change: Use PostCSS 4.1 plugin API.
Add: ( 300px <= width <= 900px) or ( 900px >= width >= 300px) syntax.
The first release.