normalize script names: no .py suffix, always cwl-

[mr-c]

Improve README and docs

[codecov]

Codecov Report

Merging #154 (1428fea) into main (8ad7b09) will increase coverage by 0.01%.
The diff coverage is 48.64%.

@@            Coverage Diff             @@
##             main     #154      +/-   ##
==========================================
+ Coverage   29.49%   29.51%   +0.01%     
==========================================
  Files          27       27              
  Lines       20738    20752      +14     
  Branches     5777     5775       -2     
==========================================
+ Hits         6116     6124       +8     
- Misses      13292    13299       +7     
+ Partials     1330     1329       -1     

Impacted Files	Coverage Δ
cwl_utils/normalizer.py	0.00% <0.00%> (ø)
cwl_utils/graph_split.py	45.22% <44.44%> (+0.12%)	⬆️
cwl_utils/cite_extract.py	53.33% <50.00%> (-2.23%)	⬇️
cwl_utils/docker_extract.py	57.14% <50.00%> (-1.35%)	⬇️
cwl_utils/expression_refactor.py	80.48% <80.00%> (ø)

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[lgtm-com]

This pull request introduces 1 alert when merging 8228937 into 8ad7b09 - view on LGTM.com

new alerts:

• 1 for Unused import