Removed UMID parsing for now, to improve test coverage

[codecov[bot]]

Codecov Report

Merging #23 (069666e) into master (8d7597c) will increase coverage by 3.76%. The diff coverage is 93.38%.

@@            Coverage Diff             @@
##           master      #23      +/-   ##
==========================================
+ Coverage   91.85%   95.62%   +3.76%     
==========================================
  Files          21       22       +1     
  Lines        1179     1280     +101     
==========================================
+ Hits         1083     1224     +141     
+ Misses         96       56      -40     

Files	Coverage Δ
tests/test_cue.py	100.00% <100.00%> (ø)
wavinfo/wave_bext_reader.py	100.00% <100.00%> (+4.87%)	:arrow_up:
wavinfo/wave_cues_reader.py	98.97% <100.00%> (+8.56%)	:arrow_up:
wavinfo/wave_reader.py	100.00% <100.00%> (ø)
tests/test_walk.py	89.28% <77.77%> (-5.46%)	:arrow_down:
tests/test_main.py	76.00% <76.00%> (ø)

... and 3 files with indirect coverage changes

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