bump to 2.12.0

bump to 2.11.0

gateway_code: bump to 2.10.0 and update changelog

bump to 2.9.0 and update changelog

bump to 2.8.0 and update changelog

bump to 2.7.0 and update changelog

gateway_code: update module version

bump to version 2.5.0

bump to version 2.4.1

Version 2.4.0: new control node firmware

+ Update control node firmware to new version:
    - More reliable serial, allows faster monitoring measures
    - Fix 120ppm constant drift
+ Fix samr21 flash timeout
+ Add a logger for cli scripts, helps debugging on boards