Gerillass
v2.1.0Something is broken
Open an issue. A compiled example is worth more than a description: the Sass you wrote, the CSS you got, and the CSS you expected.
Worth checking first: the version you have installed against the changelog. Version 2.0.0 renamed every utility function and replaced two mixins with one, and Installation has the details under Coming from Gerillass 1.x.
A question, or an idea
Following along
Supporting the project
Gerillass is maintained by one person and is free under the Apache License.