Allow records with defaults to be accepted, also type longs

[mr-c]

Fixes #780

• propose tests/wf/paramref_arguments_roundtrip.cwl as a conformance test for CWL v1.2.1

[codecov]

Codecov Report

Merging #1623 (ac09c44) into main (16f4b11) will increase coverage by 0.05%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #1623      +/-   ##
==========================================
+ Coverage   66.67%   66.72%   +0.05%     
==========================================
  Files          93       93              
  Lines       16561    16565       +4     
  Branches     4392     4394       +2     
==========================================
+ Hits        11042    11053      +11     
+ Misses       4381     4377       -4     
+ Partials     1138     1135       -3     

Impacted Files	Coverage Δ
cwltool/main.py	71.98% <ø> (ø)
cwltool/argparser.py	94.60% <100.00%> (+2.97%)	⬆️
cwltool/cwltool/argparser.py	74.78% <0.00%> (-0.64%)	⬇️
cwltool/cwltool/main.py	32.17% <0.00%> (ø)
cwltool/command_line_tool.py	77.47% <0.00%> (+0.27%)	⬆️

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