Reming empty rules with a media query like "(-o-max-device-pixel-ratio:  5/4)" would stop at the "/".
Forward slash is replace with a token before the empty rule check. Replaced after empty rule check.
Removing empty rules with a media query like "(-o-max-device-pixel-ratio:  5/4)" would stop at the "/".
Forward slash is replace with a token before the empty rule check. Replaced after empty rule check.
Merge branch 'fix/opera-fraction' of https://github.com/ademey/yuicompressor into fix/opera-fraction
Merge pull request #68 from ademey/fix/opera-fraction

Fix/opera fraction