kriswallsmith/assetic — pull request #437 by mtorromeo (2013-05-30 17:17:10+00:00)
Title: Do not check for the extension in css imports for remote urls

There are plenty of valid urls with no explicit file extension that currently do not work because of this check.
For example the google font apis look like this:
http://fonts.googleapis.com/css?family=Open+Sans:400italic,700italic,400,700