parser_test: a proc macro attribute that generate tests for the parser functions The parser_test macro will look at the documentation of a function for a markdown block delimited by ` ```test` and will feeds each line to the parser function, checking that no error are reported, and that everything was consumed A parser function must have the signature `fn(&mut impl Parser)` **NOTE**: This library is an **internal** crate of the [Slint project](https://slint.dev). This crate should **not be used directly** by applications using Slint. You should use the `slint` crate instead. **WARNING**: This crate does not follow the semver convention for versioning and can only be used with `version = "=x.y.z"` in Cargo.toml.