Fix invalid method call for strip_trailing_seperator in configuration
Added 'text-transform:capitalize' to 'hide-text' mixin
Uses :filesystem_importer sass option, when provided, to create importers

Sass allows the user to overwrite the default importer using :filesystem_importer option. This makes Compass respect that option when used.
Color grid background with gradients for 0 gutters grids
Update configuration-reference.markdown

The default environment is `development` according [default_environment()](https://github.com/chriseppstein/compass/blob/master/lib/compass/configuration/defaults.rb#L25).
Update urls.haml

Typos. Remove extranous "the" in three places.
Merge pull request #1224 from CarlRevell/stable

Update urls.haml to fix small typo
Change default .eot format from embeded-opentype to eot
Use embedded-opentype instead of eot
Document global configuration options in the sprite tutorial.
A config default without !default is no default at all!
Call out tutorials in the main nav so people can find them easier.
Fixed a bug that caused the disable_warnings setting to be ignored.
Add support for the old argument order of single-box-shadow.
Add support for passing null to contrast-color. Add tests for the color utilities module.
Rework the text selection module, add docs.
Firefox supports the text-shadow property in text selection. Add a doc note and wrap content block evaluation in browser support mixins.
Add support for mozilla's newer placeholder syntax. scope mixin content for placeholders to the right prefixes. Closes #1288
Note the change to the selection mixin for alpha users.
Mention the removed blueprint module in the changelog.