Merged requested to merge 141-move-navigation-to-activity into main
Closes #141 (closed)
WIP: based on !108 (merged) WIP: want to fix #144 (closed) too with this MR on second thoughts, let's keep a solution for #144 (closed) out of this. We probably need to save the current lifecycle state to a bundle in
onSaveInstanceState() as I do in !110 (merged). Let's either work on #144 (closed) separately or try to add it to !110 (merged) where it might fit in nicely.