Merge pull request #41 from hdeps/pep621-support

Allow specifying a path to source checkout

Ensure error messages work correctly

Merge pull request #39 from thatch/keep-going

Skip missing dependencies, print a msg

Merge pull request #37 from thatch/logic-error-in-requires-python

Fix logic bug in requires_python_match.

Merge pull request #31 from hdeps/suggest

Suggest

Merge pull request #24 from thatch/color-handling

Improve color handling

Add --have names as well as a new color.