Changelog for stm-2.4.5.1

Changelog for stm package

2.4.5.1 Sep 2018

2.4.5.0 Feb 2018

2.4.4.1 Dec 2015

2.4.4 Dec 2014

2.4.3 Mar 2014

2.4.2 Nov 2012

2.4 Jul 2012