Add processor type information to ID

[RobTillaart]

Nice useful library.
Had a quick look at the code and noticed that you can have the same deviceID for different device types.
By adding type information - could be an enum of supported types - the uniqueness can be multi processor.

reserving 2 bytes for the type would allow you to add a new device type every day for 160-180 years

[RobTillaart]

Not relevant anymore for me.