* trxcon/scheduler: print TDMA statistics on lchan deactivation
* trxcon/scheduler: be safe against a theoretical integer overflow
* trxcon/scheduler: do not abort on incomplete set of bursts
* trxcon/scheduler: TCH/F: fix Downlink burst completeness check
* trxcon/scheduler: align Downlink reception to the first burst
* trxcon/scheduler: constify Downlink burst bits where possible
* trxcon/scheduler: substitute lost TDMA frames on Downlink
* trxcon/scheduler: refactor TDMA frame number calculation
* trx_toolkit/data_msg.py: legacy flag is only for version 0x00
* trx_toolkit/data_msg.py: introduce header coding version 0x01
* trx_toolkit/data_msg.py: implement header version coding