Release 1.2.11
Changes:
- Add UNO_91H to the list of boards
- Added MAX32620HSP to board list.
- Added MAX32625NEXPAQ to board list.
- Added MAX32620MBED to board list.
- Added MAX32625MBED to board list.
- Added MAX32630FTHR board to list.
- Add NUCLEO_F412ZG platform
- Support NUMAKER_PFM_M487
- Fix retarget when mbedls is imported
- Port to Python 3