CWL v1.2: pickValue & when

[mr-c]

Works for all pickValues. Also improves support for Union types.

• pickValue: the_only_non_null
• pickValue: all_non_null
• refactor whens that contain CWL expression to be references to a new step
• pickValue on a Workflow step input. (Moved to expr refactor: pickValue on a Workflow step input #44 so we can get this merged)
• testing Moved to expr refactor: download conformance tests and process & run them #45
  • the pickValue _nojs tests all convert and run as expected, except the_only_non_null_multi_true_nojs which succeeds when it shouldn't because the tool has "fixed" the problem of the missing InlineJavascriptRequirement.

[codecov]

Codecov Report

Merging #43 (a244aa3) into main (e2728a3) will increase coverage by 0.22%.
The diff coverage is 25.18%.

@@            Coverage Diff             @@
##             main      #43      +/-   ##
==========================================
+ Coverage   23.38%   23.60%   +0.22%     
==========================================
  Files          14       14              
  Lines       19097    19355     +258     
==========================================
+ Hits         4465     4569     +104     
- Misses      14632    14786     +154     

Impacted Files	Coverage Δ
tests/test_docker_extract.py	57.69% <ø> (ø)
cwl_utils/cwl_v1_2_expression_refactor.py	14.72% <18.29%> (+0.60%)	⬆️
cwl_utils/cwl_v1_0_expression_refactor.py	15.10% <20.68%> (+0.98%)	⬆️
cwl_utils/cwl_v1_1_expression_refactor.py	15.12% <24.74%> (+1.01%)	⬆️
cwl_utils/parser_v1_1.py	22.75% <42.10%> (+0.30%)	⬆️
cwl_utils/parser_v1_2.py	21.79% <42.10%> (+0.28%)	⬆️
cwl_utils/parser_v1_0.py	29.38% <50.00%> (+<0.01%)	⬆️
tests/test_etools_to_clt.py	88.46% <62.50%> (-11.54%)	⬇️
cwl_utils/graph_split.py	51.02% <100.00%> (ø)
... and 3 more

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