Date and time can now be set from every view.
Changing from AdwPreferencesPage to AdwClamp fixes some strange UI behaviour.
UI should now fit on mobile devices.
Exchange words "azimuth" and "elevation" with symbolic icons.
Furthermore, the overview page is now a "paned" widget which means, that the size of the map can now be adjusted by the user.
The disturbance calculation to determine the visibility of the milky way is now only one single function.
Furthermore, the unrefering of an emty GDateTime object led to a crash and was fixed.
Some lines were made easier readable.
The UI of the coordinate entry has now a normal Adwaita style.
All AdwPreferencesGroups are now inside the AdwPreferencesPage container.
Furthermore, titles of AdwPreferencesGroups are not made by labels anymore. Insted the intended title option of AdwPreferencesGroups are used.