Continue to work on adding Broadcast Device
Change Insteon Thermostat i2 Broadcast Item Name
Create Insteon Thermostat i2 Child Device Objects
Create Insteon Thermostat i2 Child Items on Init
Insteon::Thermo_i2 Inject Broadcast Setting Message into Sync_links

The device requires that a specific flag be enabled for it to provide broadcast updates.

Now, when sync_links is called, this flag will be automatically set.  This is done by injecting code into the sync_links sub before calling the main sync_links in BaseDevice
Insteon::Thermo_i2 Add Message Types
Insteon::Thermo_i2 Set Broadcast Flag with Sync Links
Insteon::Thermo_i2 Fix Debug Logging
Insteon::Thermo_i2 Fix inheritance problem in message_types