AccessKit Unix adapter

This is the Unix adapter for AccessKit. It exposes an AccessKit accessibility tree through the AT-SPI protocol.

Compatibility with async runtimes

While this crate's API is purely blocking, it internally spawns asynchronous tasks on an executor.

• If you use tokio, make sure to enable the tokio feature of this crate.
• If you use another async runtime or if you don't use one at all, the default feature will suit your needs.