version: version 19 - October 23, 2017version 17 - October 7, 2016version 16 - August 17, 2015version 15 - June 1, 2015version 14 - February 9, 2015version 13 - August 18, 2014version 12 - June 10, 2014version 11 - March 31, 2014version 10 - February 18, 2014version 9 - December 9, 2013version 8 - August 24, 2013version 7 - August 23, 2013version 6 - August 19, 2013version 5 - August 16, 2013version 4 - December 4, 2012version 3 - September 24, 2012version 2 - June 4, 2012version 1 - March 6, 2012