ggplot histogram query change

[bbeat2782]

Describe your changes

Changed how histogram binning query works so that it mimics R ggplot behavior.

Issue number

Closes #751

Checklist before requesting a review

• Performed a self-review of my code
• Formatted my code with pkgmt format
• Added tests (when necessary).
• Added docstring documentation and update the changelog (when needed)

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📚 Documentation preview 📚: https://jupysql--754.org.readthedocs.build/en/754/

[bbeat2782]

ggplot_hist_check.zip

I checked the shape of histograms in the test files with ggplot in R, and they match.

[edublancas]

can you add some comments in your code? looks like you made some adjustments to the histogram computation, let's ensure it's properly explained what we're doing it (mention we want to mimic what ggplot in R does + explaining each change)

[yafimvo]

I agree with @edublancas.

We might also consider adding some information to our docs about how we calculate the bins and compare it with R to increase trust.

[bbeat2782]

@edublancas @yafimvo
Comments and explanation on our docs (magic-plot.md) are added now.

[yafimvo]

@bbeat2782 Good job!