Rest of roundtrip fixes with CRC + CHANGELOG

[robamu]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 88.52459% with 7 lines in your changes missing coverage. Please review.

Project coverage is 96.02%. Comparing base (9e71f68) to head (f83e48f).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
spacepackets/cfdp/pdu/ack.py	66.66%	1 Missing ⚠️
spacepackets/cfdp/pdu/file_data.py	66.66%	1 Missing ⚠️
spacepackets/cfdp/pdu/finished.py	87.50%	1 Missing ⚠️
spacepackets/cfdp/pdu/keep_alive.py	66.66%	1 Missing ⚠️
spacepackets/cfdp/pdu/metadata.py	66.66%	1 Missing ⚠️
spacepackets/cfdp/pdu/nak.py	88.88%	1 Missing ⚠️
spacepackets/cfdp/pdu/prompt.py	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #91      +/-   ##
==========================================
- Coverage   96.06%   96.02%   -0.04%     
==========================================
  Files          92       92              
  Lines        7413     7454      +41     
==========================================
+ Hits         7121     7158      +37     
- Misses        292      296       +4     

Flag	Coverage Δ
unittests	96.02% <88.52%> (-0.04%)	⬇️

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