Update packaging and CI

[codingjoe]

• Remove deprecated 'filenames' attribute
• Add --version CLI argument
• Change FILE CLI argument to be optional for version prints

[lgtm-com[bot]]

This pull request introduces 1 alert when merging 00ef72263b92515a61d4b1f386daf07ca25fc4cc into 39dd830e72bf9075bac789b1ee2e8fb7d16b1106 - view on LGTM.com

new alerts:

• 1 for Module imports itself

[lgtm-com[bot]]

This pull request introduces 1 alert when merging fe5c1b8c9926cb46907bf6d05b3fef025394c886 into 39dd830e72bf9075bac789b1ee2e8fb7d16b1106 - view on LGTM.com

new alerts:

• 1 for Module imports itself

[codecov[bot]]

Codecov Report

Base: 95.04% // Head: 100.00% // Increases project coverage by +4.95% :tada:

Coverage data is based on head (2f39253) compared to base (39dd830). Patch coverage: 100.00% of modified lines in pull request are covered.

:exclamation: Current head 2f39253 differs from pull request most recent head 2458031. Consider uploading reports for the commit 2458031 to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #30 +/- ## =========================================== + Coverage 95.04% 100.00% +4.95% =========================================== Files 3 4 +1 Lines 242 125 -117 =========================================== - Hits 230 125 -105 + Misses 12 0 -12 ``` | [Impacted Files](https://codecov.io/gh/codingjoe/relint/pull/30?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Johannes+Maron) | Coverage Δ | | |---|---|---| | [relint/\_\_main\_\_.py](https://codecov.io/gh/codingjoe/relint/pull/30/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Johannes+Maron#diff-cmVsaW50L19fbWFpbl9fLnB5) | `100.00% <100.00%> (ø)` | | | [relint/config.py](https://codecov.io/gh/codingjoe/relint/pull/30/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Johannes+Maron#diff-cmVsaW50L2NvbmZpZy5weQ==) | `100.00% <100.00%> (ø)` | | | [relint/exceptions.py](https://codecov.io/gh/codingjoe/relint/pull/30/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Johannes+Maron#diff-cmVsaW50L2V4Y2VwdGlvbnMucHk=) | `100.00% <100.00%> (ø)` | | | [relint/parse.py](https://codecov.io/gh/codingjoe/relint/pull/30/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Johannes+Maron#diff-cmVsaW50L3BhcnNlLnB5) | `100.00% <100.00%> (ø)` | | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Johannes+Maron). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Johannes+Maron)

:umbrella: View full report at Codecov.
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[lgtm-com[bot]]

This pull request introduces 1 alert when merging 2f39253e84cb799da939b184f1310a162d7119ac into 39dd830e72bf9075bac789b1ee2e8fb7d16b1106 - view on LGTM.com

new alerts:

• 1 for Module imports itself

[lgtm-com[bot]]

This pull request introduces 1 alert when merging 2458031bc69be8b474098b2fb0b623196833d685 into 39dd830e72bf9075bac789b1ee2e8fb7d16b1106 - view on LGTM.com

new alerts:

• 1 for Module imports itself