Insteon_Thermo_i2: Decode Status Flag

Only Cooling and Heating statuses appear to be supported.  Bits 4 and 6 are also always enabled, I don't currently know what these are.  Sadly, humidifying and dehumidifying do not appear to be supported.
Insteon_Thermo_i2: Update status on Humidifying or Dehumdifying
Inston_Thermo_i2: Convert Poll_Status to an Internal Sub, Replace with Request_Status

This more closely matches what the user would expect
Insteon_Thermo_i2: Add Request_status Routine