Adds scale support.

Squashed commit of the following:

commit 98b51e7a30def762a126c1be151d40f0ae486a9a
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Sun Aug 10 20:10:51 2014 -0500

    Rebuilds binaries.

commit a69769e906d29849b8acb53fc3b1902b0097242d
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Sun Aug 10 20:06:32 2014 -0500

    Some online help text edits.

commit 4aef4fd03f75e8e2e953dbc9ffe151cc72b9041e
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Thu Aug 7 08:53:17 2014 -0500

    Updates online help text.

commit f4906b0294ec07501fecfb859646f94906acfe40
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Thu Aug 7 08:34:21 2014 -0500

    Updates package versions.

commit a935a3ec73c478f879fbfc1eb7de7c0bcf08922b
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Thu Aug 7 08:31:50 2014 -0500

    Updates screenshots.

commit 7cb9a029b8dd570bc222c39a800e5332e2695cdb
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Tue Aug 5 08:05:19 2014 -0500

    Un-breaks global keyup handler.

commit 8953b59fa853f41b918c55bc0e9343c5a539705d
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Sun Aug 3 13:20:02 2014 -0500

    Prevents blocking of Cubelet mouse events.

commit 935af6d8d712b9431b7043612eacd1871fe72f87
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Sun Aug 3 13:01:46 2014 -0500

    Removes unnecessary check.

commit 5a041be55bb2c27881e3f18cb7715a069699f6c3
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Sun Aug 3 12:33:22 2014 -0500

    Fixes some drag state-related issues.

commit d98c8cbdbdbacd74ef3472387a69dd815ef121fe
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Sat Aug 2 15:13:05 2014 -0500

    Fixes some presentational issues.

commit b37df292584047cfe2b4bd512f27f5b6e84a93f5
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Sat Aug 2 14:57:52 2014 -0500

    Adds compatibility shim for pre-scale saved animations.

commit 6c73d8e3bd4ad1a978002944d0dfef4c08db004e
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Sat Aug 2 14:25:30 2014 -0500

    First pass at wiring up scaling.

commit 102b6e0a1c8fa60c1a028d7d3670e446463d32a6
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Thu Jul 31 08:37:57 2014 -0500

    Handle Cubelet interactions better when the user hits "shift."