* enable UoM for rpm values * support uom for non-hour time channels * add state options for frost setting * add data type for percentage * support DecimalType for QuantityType channels * support rfc2217 * improve state description for time channels * improve code style in DataTypes * remove unnecessary command type check * enable UoM for enthalpy timer Signed-off-by: Hans Böhm <h.boehm@gmx.at>