Changed do_help() so that argparsers print their own help.

[kmvanbrunt]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.43%. Comparing base (3ee5e93) to head (36e519e).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1467      +/-   ##
==========================================
- Coverage   98.44%   98.43%   -0.02%     
==========================================
  Files          21       21              
  Lines        5864     5863       -1     
==========================================
- Hits         5773     5771       -2     
- Misses         91       92       +1     

Flag	Coverage Δ
unittests	98.43% <100.00%> (-0.02%)	⬇️

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