sul-dlss/SearchWorks — pull request #662 by jkeck (2014-08-06 01:12:05+00:00)
Title: Clone params in remove_range_params helper method so we only modify a copy

Fixes #393

![range-facet](https://cloud.githubusercontent.com/assets/96776/3821170/8fd337e8-1d06-11e4-8d5d-860576d63a89.gif)