I started watching the online lessons yesterday and it shocked me that when plotting the confusion matrix with
plot_confusion_matrix() the numbers in the matrix are only horizontally aligned but not vertically aligned. I checked the source code and I saw that
horizontalalignment="center" is specified but the vertical alignment is left at its default. Is it on purpose?
I could make a pull request to add the
verticalalignment="center", it should not affect the tests, break anything nor require extra tests.