tests: upgrade all the CWL v1.0 conformance tests and confirm the results

[mr-c]

No description provided.

[mr-c]

I did this manually, and with #90 and #88 merged, this works for v1.0 to v1.1

[jdidion]

Please also test on mixed-versions tests, e.g. https://github.com/common-workflow-language/cwl-v1.2/blob/1.2.1_proposed/tests/mixed-versions/wf-v12.cwl

I get the following error when trying with the current release version:

Processing wf-v12.cwl
Unsupported cwlVersion: v1.2
Traceback (most recent call last):
  File "/Users/jdidion/.pyenv/versions/cwltool/bin/cwl-upgrader", line 11, in <module>
    sys.exit(main())
  File "/Users/jdidion/.pyenv/versions/3.6.14/envs/cwltool/lib/python3.6/site-packages/cwlupgrader/main.py", line 59, in main
    return run(parse_args(args))
  File "/Users/jdidion/.pyenv/versions/3.6.14/envs/cwltool/lib/python3.6/site-packages/cwlupgrader/main.py", line 80, in run
    document, args.v1_only, args.v1_1_only, args.dir, imports
  File "/Users/jdidion/.pyenv/versions/3.6.14/envs/cwltool/lib/python3.6/site-packages/cwlupgrader/main.py", line 118, in upgrade_document
    process_imports(document, imports, inner_updater, output_dir)
UnboundLocalError: local variable 'inner_updater' referenced before assignment

[tetron]

This should be fixed in main, need to make a new release.

[mr-c]

@tetron Thanks for the reminder, I'll make one right after I finish #92

[mr-c]

fixed in #139