fix missing name parameter in calendar_heatmap

[gutjuri]

When calling calendar_heatmap I got an error that this line:

chat-miner/chatminer/visualizations.py

Line 185 in b7d0ea6

.join(df_day, on="date", how="left")

failed. This PR fixes this issue by manually setting the novel dataframe's columnname to "date" (previously it was "literal" for some reason.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.34%. Comparing base (b7d0ea6) to head (417e554).

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Additional details and impacted files

@@           Coverage Diff           @@
##             main     #133   +/-   ##
=======================================
  Coverage   90.34%   90.34%           
=======================================
  Files           1        1           
  Lines         259      259           
=======================================
  Hits          234      234           
  Misses         25       25           

Flag	Coverage Δ
unittests	90.34% <ø> (ø)

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[joweich]

Hey @gutjuri, I can't reproduce this on polars v0.20.2, this might be an issue on other versions only. However, I agree that we should set the column title explicitly for codestyle reasons. Thank you for your 5th contribution to this project! 🚀

[gutjuri]

pip install polars installed version 0.20.14 for me. Thanks for merging. Wasn't aware that this was my 5th contribution already ;P Time flies :D