Changes

an [[UCI]] compliant chess engine by [[Mike Leany]], written in [[C]], since October 2010 no longer [https://en.wikipedia.org/wiki/Vaporware vaporware] <ref>[http://vapor.mikeleany.com/home/vaporwarenomore Vaporware No More - Vapor Chess] by [[Mike Leany]], October 11, 2010</ref>, and since November 2019 published as [[:Category:Open Source|open source]] on Github [https://en.wikipedia.org/wiki/GitHub GitHub] <ref>[http://vapor.mikeleany.com/home/sourcecodereleased Source Code Released] by [[Mike Leany]], November 09, 2019</ref>.