this option has many implicit assumptions that cannot be changed
easily and options that are set are especially brittle regarding
condor versions and/or cluster configurations

keep requirements for backwards compatibility with a deprecation warning

also refactor submit description generation for clarity

Ensure node input/outputs are consistent for nodes upon Layer instantiation

See merge request patrick.godwin/ezdag!6

Add test suite + coverage

See merge request patrick.godwin/ezdag!5

Add missing type annotations

See merge request patrick.godwin/ezdag!4

setup.cfg: remove redundant setup_requires

See merge request patrick.godwin/ezdag!3

README: update installation, add PyPI/conda badges

See merge request patrick.godwin/ezdag!2

Specify ci image

See merge request patrick.godwin/ezdag!1