roundlake/wash_out — pull request #43 by dhinus (2012-05-24 09:40:15+00:00)
Title: ruby-1.8.7 compatibility patch

Hash#select works differently in ruby 1.9,
this seems a good workaround

The idea is from:
http://bibwild.wordpress.com/2012/04/12/ruby-hash-select-1-8-7-and-1-9-3-simultaneously-compatible/