0.11.1
Released a long time ago: New:
The ability to import other groocss files is supported by importFile, importStream, and importString methods which take a parameter map and input. For example:
importFile otherCss.absoluteFile, linkColor: '#456789'
This would allow you to make a "template file" for example with variables replaced in multiple ways.
There are also "raw" and "comment" commands, for including raw CSS and comments respectively.