a1ca700bff
Introduced a new `Logger` trait which can be used to access all log events emitted during compilation. Currently these only include messages emitted by the `@debug` and `@warn` statements. Changes were implemented in a backwards-compatible manner, but the current `Options::quiet` method has been marked as deprecated, as its behavior can be achieved using the `NullLogger` structure. The default logger used is `StdLogger` which writes all log events to standard error. This reflect the default behavior prior to introduction of `Logger`. With these new changes, it is also now possible to properly test the `@debug` and `@warn` statements.
grass_compiler
This crate exposes the internals of the main package, grass. For most users, the preferred crate should be grass, as it is more stable and has a simpler API.
This crate will see frequent breaking changes.