Cwl-utils

CWL tool to refactor expressions / interpolated parameter references
- Now exits `7` if only a single file is provided and it is unmodified (and other fixes) 42 mr-c
- better escaping 47 mr-c
- accept relative paths 48 mr-c

CWL v1.x Parsers:
- CWL v1.2: pickValue & when (generic and in the CWL expr refactoring tool) 43 mr-c
- fix for expanded syntax in `id`-like fields 51 52 tetron mr-c

README freshen d1f1b0d6246680d13f3611e12b8310237e4fbfa4 mr-c

- fix errors in graph_split, added test mr-c
- improve CLI for graph_split.py 38 by altairwei
- clean up image pullers mr-c
- update CWL v1.0, v1.1 and v1.2 parsers mr-c
- docstring everywhere! mr-c
- Added a CONTRIBUTING guide mr-c

$schemas` support is courtesy of leipzig ; thanks!

create codeseq analysis mr-c
regenerate parsers (https://github.com/common-workflow-language/cwl-utils/pull/26) illusional
bump schema-salad version (to `>=7 <8`) illusional

- update v1.0 and v1.1 parsers with optional field support (15 illusional)
- freshen testing setup (mr-c)

add v1.1 parser mr-c
add script to replace ExpressionTools with CommandLineTools mr-c