Adds data import methods.

Squashed commit of the following:

commit af576d4d24604ab58d0c74d9e7935d50969f1017
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Wed Oct 23 21:32:56 2013 -0500

    Builds v0.16.4.

commit 8122aba590b85177ea39d6a119cac517b4bfed05
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Wed Oct 23 21:20:43 2013 -0500

    Adds some docs for import methods.

commit 9cd546d68255e4046e8e236d3276ba1bcd253559
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Wed Oct 23 21:03:40 2013 -0500

    Adds deep import test.

commit e1b24229815edc2a80cc9534babf975c13b86b64
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Wed Oct 23 20:55:17 2013 -0500

    Changes data format to be a little more useful.

commit 9d284e17526caec6854a772071d9ea04dd47aa65
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Tue Oct 22 22:30:44 2013 -0500

    Adds import tests for Kapi.

commit 5301210786005d938dcc70c4888fba1e5623f73b
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Mon Oct 21 21:33:52 2013 -0500

    Adds unit test for Kapi.Actor#importTimeline.

commit 0bd60d9bf86cde277edae4a9db5c99cd47fa04eb
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Mon Oct 21 21:07:09 2013 -0500

    Adds first-pass import code.