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.
WIP
WIP: keymap generation test passes
meta: Update features and version
WiP: cargo.lock
WIP: don't crash
WIP: no outlines
parsing: New tests
WIP: base level works
WIP: remove old keyboard
symbols correctly input
WIP: lodaing files
WIP: fallback works
Valid fallback
Pros: Ability to use Rust libraries from crates.io
Problems: Need to lock library versions and document their reproducible building, either via Cargo.lock or vendoring.
This allows us to remove a lot of #ifdef's. Either we want to use
a config.h or we don't. Since we'll want it for e.g. optional gsound
support later on let's have it.
This breaks autoconf. The only resulting binary is the squeekboard GUI. It still needs the autotools-built eekboard client in order to do anything useful. That one needs to be built using a different branch, making this a WIP.
