required is now False so will simply default to --skygrid-method

[mcoughlin]

Fixes #57

[codecov]

Codecov Report

Merging #59 (419289b) into main (bcc7313) will not change coverage.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##             main      #59   +/-   ##
=======================================
  Coverage   31.41%   31.41%           
=======================================
  Files          28       28           
  Lines        1340     1340           
=======================================
  Hits          421      421           
  Misses        919      919           

Impacted Files	Coverage Δ
dorado/scheduling/scripts/main.py	9.40% <0.00%> (ø)
dorado/scheduling/scripts/metrics.py	9.09% <0.00%> (ø)
dorado/scheduling/scripts/simsurvey.py	9.40% <0.00%> (ø)

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[mcoughlin]

Unit tests pass. Merging.