Fail to find implemented trait in the list returned from all_trait_decls #37
Description
This could be a naming issue, but I expect all_trait_decls and all_trait_impls to return all traits declarations and implementations available, i.e.:, all local and external traits.
Maybe we can rename these functions to local_trait_decls and local_trait_impls. In this case, should we also provide an API that returns trait declarations and implementations from external crates.