chriseppstein/compass — pull request #1016 by dannyx0 (2012-09-08 00:03:15+00:00)
Title: Added @experimental support for vendor-prefixed property and value.

There are some cases where prefixing both the property and value is useful.

One example is for creating a mask-image mixin that also prefixes the gradient:

````scss
@mixin mask-image($gradient) {
@include experimental-both(mask-image, $gradient); }
````