Read compressed CSVs

[VisruthSK]

This PR was generated by Codex.

Submission Checklist

• Run unit tests
• Declare copyright holder and agree to license (see below)

Summary

Support compressed CSVs. Closes #1027.

Copyright and Licensing

Please list the copyright holder for the work you are submitting
(this will be you or your assignee, such as a university or company):
Visruth Srimath Kandali

By submitting this pull request, the copyright holder is agreeing to
license the submitted work under the following licenses:

• Code: BSD 3-clause (https://opensource.org/licenses/BSD-3-Clause)
• Documentation: CC-BY 4.0 (https://creativecommons.org/licenses/by/4.0/)

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.73%. Comparing base (5f6e8c3) to head (ee7b5dd).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1217      +/-   ##
==========================================
+ Coverage   91.69%   91.73%   +0.04%     
==========================================
  Files          15       15              
  Lines        6246     6246              
==========================================
+ Hits         5727     5730       +3     
+ Misses        519      516       -3     

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