Add a missing constant in 'radio_tx_status_t' enum
Merge pull request #1239 from rousselk/radio-API-again

Add a missing constant in 'radio_tx_status_t' enum
cleanup licenses to fix #392
Merge pull request #1217 from thomaseichinger/YALF

boards: cpu: cleanup licenses to fix #392
Implement packet buffer module
Add unittests for packet buffer