Header text showing the month/week/year under the headerbar, above the month / week view, is now redundant with the sidebar
In version 43, this part (highlighted in red) is now totally redundant and eats precious vertical space that could be instead used for contents:
Unless there is a specific need remaining for it, I would suggest removing it, as it seems like all that information is present in @aplazas mini calendar widget sidebar implementation anyway (including week numbers, and year numbers when not-the-current-year), and the views are now tightly tied to the state of that mini calendar...
To make the week numbers more obvious in the sidebar, we could modify our gcal-date-chooser.c to style it like GNOME Shell does (see Sam's comment below).
Edited by Jeff Fortin