Migrate to ruff, add pathlib support to the API.

[wRAR]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 90.62500% with 6 lines in your changes missing coverage. Please review.

Project coverage is 98.10%. Comparing base (8cc2b43) to head (00352aa).
Report is 7 commits behind head on master.

Files with missing lines	Patch %	Lines
queuelib/pqueue.py	62.50%	2 Missing and 1 partial ⚠️
queuelib/rrqueue.py	62.50%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##            master      #69      +/-   ##
===========================================
- Coverage   100.00%   98.10%   -1.90%     
===========================================
  Files            4        4              
  Lines          312      316       +4     
  Branches        50       37      -13     
===========================================
- Hits           312      310       -2     
- Misses           0        4       +4     
- Partials         0        2       +2     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.