- Add more browsers to defaults (`> 1%, last 2 versions, ff 17, opera 12.1`
instead of just `last 2 browsers`).
- Keep vendor prefixes without unprefixed version (like vendor-specific hacks).
- Convert gradients to old WebKit syntax (actual for Android 2.3).
- Better support for several syntaxes with one prefix (like Flexbox and
gradients in WebKit).
- Add intrinsic and extrinsic sizing values support.
- Remove never existed prefixes from common mistakes (like -ms-transition).
- Add Opera 17 data.
- Fix selector prefixes order.
- Fix browser versions order in inspect.
