conservation

Actual test coverage is ~89%. That's great! However, would be great to increase that number to make this package more reliable and avoid future regressions ;)

It's easy to see what lines are missing tests using codecov and coveralls.

We need to find a way to test `MIToS

For densepose, there are multiple different default values specified for the model cache directory between the CLI and the python package

• In cli.py, says env variable ZAMBA_CACHE_DIR. It doesn't look like you can actually set it with this env variable
• In [`models.config.validate_model_