dc-js/dc.js — pull request #557 by mtraynham (2014-03-31 15:53:21+00:00)
Title: Exposes filter functions so they can be easily overriden

the _chart.filter(_) function is nice, but it's not reusable at all. This exposes each portion of the filter function as necessary. Also gives some code reuse when encountering the array filter.