1.0.20170214185319: Merge pull request #12 from common-workflow-language/check-tty

Use sys.stderr.isatty() to tweak output behavior

1.0.20161227194859: Merge pull request #10 from common-workflow-language/safe-load

Use yaml.safe_load() instead of plain load().

v1.0.20160907111242: Merge pull request #2 from common-workflow-language/type-safety

add PEP484 typeshed

v1.0.20160907103132

ship flake8 config