added retina-image mixin
Added optional retina-filename
Added asset-pipeline support for rails
Replaced media-query with hidpi mixin
Removed image-height and width in favor of background-size variable
dont impose 2x naming for custom retina-filenames
Added double strand support to modular-scale function
Added unpack function
Updated position mixin to use unpack function on coordinates parameter
Updated position mixin to ignore falsy values
Change false values to null to deprecate compact function
Remove deprecated webkit-gradient code
Removed unneeded compact function
Update _clearfix.scss to three-line modern clearfix

Use a more modern *three line* clearfix based on Nicolas Gallagher's 2011 micro clearfix, as announced and explained by Thierry Koblentz here: http://www.css-101.org/articles/clearfix/latest-new-clearfix-so-far.php.

This is used by Inuit.css, so it's certified legit.
Remove extraneous comments

Removed clause on lack of IE7 support, given the assumption that users
are already aware Bourbon supports IE9+.

Removed credit to Nicolas Gallagher's micro-clearfix, given that the
"beat that" clearfix is based upon it and credits it in the
explanation page.
Remove extraneous comments

Remove clause on lack of IE7 support, given the assumption that users
are already aware Bourbon supports IE9+.

Remove credit to Nicolas Gallagher's micro-clearfix, given that the
"beat that" clearfix is based upon it and credits it in the
explanation page.
Merge branch 'patch-1' of https://github.com/twome/bourbon into patch-1
Update _clearfix.scss

Jesus. I can't believe I missed that.
Using image-url instead image_url to prevent wrong image paths on rails 4

On a rails 4 app having "config.assets.digest = true". The "image_url" on the mixin outputs the css asset name without the fingerprinted names. And that makes the image does not appear.
update gems