square/crossfilter — pull request #85 by jasondavies (2013-08-17 22:03:00+00:00)
Title: Allow records to be removed.

This adds a new method to all crossfilter instances, allowing the
currently-selected records to be removed, e.g.

var db = crossfilter([1, 2, 3]),
dimension = db.dimension(Number);
dimension.filter(1);
db.remove(); // removes a single record (1), leaving [2, 3]