0.1.0, 28 Dec 2012 -- Initial Release
0.2.0, 10 Mar 2013 -- Added get_panel, cleaned up dataset, and changed to use
index by default
0.2.3, 12 Apr 2014 -- fixed index reducer, cache expiration
0.2.5, 21 Apr 2014 -- fixed cache compatibility
0.2.7, 10 May 2014 -- fixed install dependencies
    (thanks to Ramiro Gómez for the patch!)
