3.0.0
- Add new boards Arduino MKR GSM 1400 and Arduino MKR WAN 1300 (issue #25)
- Add support for Atmel ICE, BlackMagic, J-Link external tools for debugging and programming (issue #18, issue #26)
- Allow declaring of a custom programming tool
- Allow overriding of PROGNAME (custom firmware name)
- Update Arduino SAMD core to 1.6.17