Shopify/liquid — pull request #491 by pushrax (2014-12-02 19:39:27+00:00)
Title: Drop Ruby 1.9 from CI, add Ruby head

@Shopify/liquid is everyone ok with this? The main motivation is that there are a few places that would benefit from keyword arguments.

Also, rbx-2 has been passing lately, so I removed it from the allowed failure list.