midas/phil_columns — pull request #5 by njonsson (2014-09-30 16:37:13+00:00)
Title: Enhance 'envs' and 'tags' DSL

This makes it possible for users to write

env :development
env :staging, :production
envs :development, :test

with the result being `[:development, :staging, :production, :development, :test]`, and

tag :foo
tag :bar, :baz
tags :foo, :qux

with the result being `[:foo, :bar, :baz, :foo, :qux]`.