p3drosola/Backbone.VirtualCollection — pull request #28 by jbugwadia (2014-03-28 07:39:36+00:00)
Title: recalculate index for remove event

Backbone's remove event passes the removed Model's index in the options
hash. This may be used by other upstream listeners (e.g. Backgrid) and
should match the index in the VirtualCollection.