Support tabular figures
Since the 0.100 release, Cantarell supports tabular figures, which we should make use of in the shell. For example, in the calendar widget or the World Clock. This should not happen globally, but depending on the context [1].
CSS provides a font-feature-setting to explictly set numerals to be tabular [2].
[1] https://www.fonts.com/content/learning/fontology/level-3/numbers/proportional-vs-tabular-figures [2] https://www.w3.org/TR/css-fonts-3/#font-rend-desc