Continue fixing issue 139

[kkappler]

• [x] deprecate return collection argument from process_parkfield_run

[codecov[bot]]

Codecov Report

Merging #270 (8604465) into fourier_coefficients (8cf0fdd) will decrease coverage by 0.02%. The diff coverage is 100.00%.

@@                   Coverage Diff                    @@
##           fourier_coefficients     #270      +/-   ##
========================================================
- Coverage                 77.52%   77.50%   -0.02%     
========================================================
  Files                        84       84              
  Lines                      5147     5144       -3     
========================================================
- Hits                       3990     3987       -3     
  Misses                     1157     1157              

Impacted Files	Coverage Δ
tests/parkfield/test_process_parkfield_run.py	93.47% <100.00%> (-0.40%)	:arrow_down: