docs/xic_release_notes

xic3.2 74823Sun Sep 28 21:21:13 PDT 2014
xic4.0 20254Wed Oct 29 12:35:47 PDT 2014
xic4.1 76403Wed Sep 30 20:37:50 PDT 2015
xic4.2 73527Sun Apr 9 21:32:53 PDT 2017
xic4.3 17814Thu Jan 11 21:16:22 PST 2018