adding files from freeModbus v1.5.0
adding files from freeModbus v1.4.0
adding files from freeModbus v1.3.0
adding files from freeModbus v1.2
adding files from freeModbus v1.1.2
adding files from freeModbus v1.1.1
adding files from freeModbus v1.1.0
adding files from freeModbus v1.0.5
adding files from freeModbus v1.0.4
adding files from freeModbus v1.0.3