Stable: Support for mbed 2.0 and mbed 3.0 test tools
Main changes:
- Multiple targets detection (110+ platform descriptions).
- Added extra information about TargetID (USBID & mbed.htm) in JSON output.
- Added target unique name per host system;
TARGET_NAME[index]notation. - Added debug output; CLI switch
-d. - Added unit tests to check basic porting features.