Fixes #100
Fixes #99

Claimed does not propagate correctly on long press, gtk bug?

Second press of the same button now always clears the picker
Can easily switch from number picker to earmark picker and vice versa
Fixes number picker reopening on click

Part-of: <https://gitlab.gnome.org/GNOME/gnome-sudoku/-/merge_requests/72>

Allows more control over the setters
Fixes warnings not updating correctly on toggle with highlighter enabled

Part-of: <https://gitlab.gnome.org/GNOME/gnome-sudoku/-/merge_requests/72>

Fixes earmarks created by show_possibilitities not being modifiable

Part-of: <https://gitlab.gnome.org/GNOME/gnome-sudoku/-/merge_requests/72>

fixes #53
fixes #44

Cut off the middle man since we rely on counting occurences anyways
Fixes breakages not being reapplied properly on removing a value

The widgets are still focuseable, this only denies the child button

Shows selection in light mode even on fixed cells and clears color artifacts

bug added in 04d489c4

Part-of: <https://gitlab.gnome.org/GNOME/gnome-sudoku/-/merge_requests/81>


(cherry picked from commit 3f1b65f7)

It was causing problems with the picker