periodical checksums initial commit

The goal is that two publishers can produce messages with equal checksums.
this means a publishers does not have to comminicate with each other who
will publish a qtc message
set of qsp timeouts for processor
this time including thechanges to binary
rolling signature to go
pod documentation
syntax fix msg + processor handles rolling checksums
processor handles chksum_period now
publish telegrams with checksum period
aprsgate simplyfied
dsa signatures part 1
save current state
dsa implementation
new signature dsa fixups
syntax fix
Merge branch 'checksum_period'