fixing gcc build, refs eclipse-sumo#3

tagging release 0.32.0, refs eclipse-sumo#563

tagging release 0.31.0

tagging release 0.30.0, refs eclipse-sumo#563

tagging release 0.29.0

tagging release 0.28.0, refs eclipse-sumo#563

tagging release 0.27.1 refs eclipse-sumo#563

patching expected results refs eclipse-sumo#21, refs eclipse-sumo#2509

tagging release 0.27.0, refs eclipse-sumo#563

tagging release 0.26.0, refs eclipse-sumo#563