fec: wip
fec: wip: removing ccsds decoder. Not as fast as the cc_decoder and the parameters make it awkward to deal with (and it adds a 32-bit delay).
fec: wip: removed inbuf from decoder

Doesn't seem necessary since the scheduler should guarantee the proper boundaries are available. This then saves the memcopy.
Revert "blocks: add optional argument to deinterleave and interleave ctors to not set relative rate."

This reverts commit 0c589a7d8f18c9b6f7daf06ecfe2a90e84a004d2.

Not necessary.
fec: wip: cleaning up tagged decoder, rep code.
fec: wip: docs