layersurface: avoid duplicate assignment

See merge request !467

Show error when compositor doesn't support Layer Shell

Closes #284

See merge request !466

Add Bulgarian BDS layout

See merge request !464

This is the Bulgarian (BDS) layout. I took the liberty to remove "э"
from the layout, as it is not part of the Bulgarian alphabet and it was
left there for historical reasons, also not to mess with the layouts for
physical keyboards. Removing it gives more space for the shift_l and
backspace keys.

I've also added the letter "small i with grave" to the special symbols, as
it is occasionally used in Bulgarian.

The 'bg' layout is actually the 'bg+phonetic' layout.
Mark it as such.

Introduce Swiss French keyboard layout

See merge request !463

Release 1.14.0 "Swim bladder"

See merge request !458

Introduce Arabic keyboard layout

See merge request !460

Signed-off-by: Khaled Eldoheiri <khalid@kdehairy.com>

Changes:
- fixed builds in paths that would be shell-escaped
- layout popover leaves the panel area
- global styles better picked up
- and code quality improvements

build: Fix unnecessary shell quotes

See merge request !454

popover: Allow spanning outside panel area

See merge request !455

remove some unnecessary unsafe code

See merge request !457

use the correct priority to allow users' CSS to apply

See merge request !456

use the correct GtkStyleProviderPriority to indicate that the styles are provided by the application

Quotes aren't needed when the arguments aren't expanded by the shell.

Now paths with spaces and other nontrivial characters work.

Rearrange code dealing with layout files

See merge request !449

Fix typos jp keyboard comments

See merge request !452

Taken from https://salsa.debian.org/DebianOnMobile-team/squeekboard/-/commit/a7c3ebf03cf1a4cbf535eddd4332090e304b767a

Release 1.13.0 "Externality"

See merge request !451

Changes:

- A system for latching and locking views
- Some crash fixes
- Locale-flavored terminals
- A way to add locale-flavored emoji and numbers layouts
- Making the code less annoying to work with in some places
- Fixed layout changes on newer GSettings
- Mod4 modifier
- Better session registration
- New layouts: Dvorak, Colemak wide, hebrew, wide Thai

layout: Take into account text purpose again

Closes #277

See merge request Librem5/squeekboard!448

layouts: Stop assuming that layout name always changes on switch

Closes #276

See merge request !450

rust: Fix compiler warnings

See merge request !445

docs: Describe view switching

See merge request !443

Layout type switching outside of overlay was always done with gsettings in the middle, assuming that all clicks on languages in the popover result in a gsettings event. That's a bad assumption if there's only one xkb lang present.

This is a simple work around. A better solution would be to turn the entire system of layout switching into a central object that receives messages about changes that need to be applied, and then applies them.

From now on, all the parameters for loading layout are handled inside a single pure function, which makes them possible to test.

As a side benefit, the old preference order function composed of a mess of nested procedures is gone.

Fix emoji and number layouts

See merge request !444