This release introduces some renderer improvements, including relating to speed.

Mire importantly, layout files have an incompatible change in format: bounds on the layout are replaced by margins. This removes the possibility that buttons don't fit in the layout and frees layout makers from having to calculate the size of the layout manually.

Use margins, remove bounds

See merge request Librem5/squeekboard!283

CI: Build arm64 .deb

See merge request Librem5/squeekboard!292

Readme updates

See merge request Librem5/squeekboard!281

Use clap in the lockfile

See merge request Librem5/squeekboard!284

Positioning

See merge request Librem5/squeekboard!274

Entry test: Add Terminal input purpose

See merge request Librem5/squeekboard!278

Simplify renderer

See merge request Librem5/squeekboard!272

squeekboard-test-layout: add argument parsing and some more output

See merge request Librem5/squeekboard!277

hacking: Add DCO and licensing requirement

See merge request Librem5/squeekboard!282

layout: add Japanese Kana wide layout

See merge request Librem5/squeekboard!275

Sizes of widgets can be derived, so storing them was only for C compatibility. Similar with storing position inside of widgets.

Some layout margin and scaling changes could be introduced, meaning a possibility of visual differences.

They are no longer referenced anywhere in C, so it's safe to let Rust memory management deal with them.

layout: add German wide layout

See merge request Librem5/squeekboard!271

Removed window size dependent surface.

Moved Cairo context usage to Rust, and rearranged ctx setup (position) to happen in one place.

Removed render calls that were overwritten on each draw call anyway.

Switch layout on click

Closes #157

See merge request Librem5/squeekboard!266

keycodes: Sort to eliminate runtime indeterminism

See merge request Librem5/squeekboard!268

Release 1.4.0 "Nacelle"

See merge request Librem5/squeekboard!273

Major changes:

- "text" property for layouts
- adjusting to user's color scheme