- Removed adf435x_common and replaced with a real encapsulated interface
- Looks similar to the MAX287X code
- Updated all DB classes to use the new common code
- Added desired and coerced values and accessors to property
- Added support to register desired subscribers
- set APIs don't reallocate storage for a property value
- Renamed callback method registration APIs
- Registering 2 coercers or publishers for a property will throw
- Registering a coercer and a publisher for the same property will throw
- Refactored GPIO ATR definitions
- Added new 3000 core with a more efficient API
- Added a separate db_gpio_atr core to control the ATR bus
- Ported b2xx, e3xx and x3xx to the new core
- Minor cleanup
* Added support for new CBX-120, SBX-120, and WBX-120 daughterboards
* Added implementation of Integer-N tuning for all CBX, SBX, and WBX daughterboards
* Added --int-n option to examples to show how to use Integer-N tuning API
* Removed duplicate ADF4350/ADF4351 code and moved it to common/adf435x_common.cpp
