Add fmt and lint checks

[bernardopericacho]

Proposed changes

• Add pre-commit hooks to the repository to lint, format and upgrade the code.
• Add Github action and instructions to run and enforce the pre-commit hooks.

[addisonElliott]

Thanks! Getting closer, just some minor nitpicks.

[addisonElliott]

@bernardopericacho After this PR, do you think we’re getting close to a v1 release or are there other major changes you had in mind?

[bernardopericacho]

I have to rebase the changes from master and apply this again. Hopefully I can do it this weekend

[bernardopericacho]

@bernardopericacho After this PR, do you think we’re getting close to a v1 release or are there other major changes you had in mind?

I was thinking about pinging you (somehow) to talk about a couple of things:

• one is maybe we should just support writing and reading from memory and that will make the code much cleaner and the parameters and usage more clear. We can write examples similar to this to demonstrate how you can read from or write to a file. https://github.com/mhe/pynrrd/blob/master/nrrd/tests/test_writing.py#L374
• the other one was typing hints. What are your thoughts about it?
• Also, looks like numpydoc dependency is only used for generating the documentation? (please correct me if I am wrong) it is needed as a package dependency?

[addisonElliott]

Sorry for the delay! This fell off my radar.

• one is maybe we should just support writing and reading from memory and that will make the code much cleaner and the parameters and usage more clear. We can write examples similar to this to demonstrate how you can read from or write to a file. https://github.com/mhe/pynrrd/blob/master/nrrd/tests/test_writing.py#L374

I personally don't think the API is too confusing right now as is. Plus, I think the examples are verbose & helpful enough that it resolves any potential confusion.

I think reading/writing directly to/from files is the majority use-case for this library. Could be wrong here. It saves a few steps of the user having to open the file handle. Also, it allows us to read in detached-header NRRD files when reading by opening the header file for them.

• the other one was typing hints. What are your thoughts about it?

That sounds good to me. I'm a big fan of type hinting.

• Also, looks like numpydoc dependency is only used for generating the documentation? (please correct me if I am wrong) it is needed as a package dependency?

Yep, that's correct. IIRC, it was necessary so ReadTheDocs would know to download that. I should be able to do this a different way now.

[addisonElliott]

Yep, that's correct. IIRC, it was necessary so ReadTheDocs would know to download that. I should be able to do this a different way now.

I did this in #120, so we're good to go there.