Adds support for Lo-Dash.

Squashed commit of the following:

commit 79fc7d14e6247e75ecf16de1a99e6aa36682dc25
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Sun Oct 5 16:42:52 2014 -0500

    Builds 1.3.3.

commit 792255d601c8c0cfd6a5cb47e44006949089ef02
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Sun Oct 5 16:36:43 2014 -0500

    Updates some more Underscore referneces to Lo-Dash.

commit 57a393bd450f1dbaa7ce1614a741dafaabd5a5cf
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Sun Oct 5 16:15:54 2014 -0500

    Updates dist/underscore-min references to use Lo-Dash.

commit 90da018d19737a18cd777b6466b9f9bed83fc9ed
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Sun Oct 5 15:55:18 2014 -0500

    Converts test files to use Lo-Dash.