madrobby/zepto — pull request #447 by ryanve (2012-03-19 18:44:31+00:00)
Title: added $.grep, updated .not() and .filter()

Added `$.grep` (same functionality as [jQuery.grep](http://api.jquery.com/jQuery.grep/))

Updated `.not()` and `.filter()` methods to use `$.grep` rather than previous code.

Added the `$.filter(function(index))` form of `$.filter`

See [tests here](http://jsfiddle.net/Vke28/6/)