added changes file for version 1.2.4.1
added changes file for version 1.2.4.1

OpenTM2/opentm2-source,OpenTM2/opentm2-source,OpenTM2/opentm2-source,OpenTM2/opentm2-source,OpenTM2/opentm2-source,OpenTM2/opentm2-source