Allow doc comments in mock! macro

[asomers]

Previously, the build would fail if the mock struct line contained a doc
comment. Now, the build will pass, and doc comments on the struct and
methods will be propagated to the generated code.

Fixes #100

[MOZGIII]

Could you rebase this to master so that I can check? I've already updated to 0.6.0, but this branch is still on 0.5.2.

[asomers]

Whoops! Serves me right for not pulling master before starting development. Try now.

[MOZGIII]

I managed to run a test, and it looks like there are still issues.

I think you can easily debug locally if you add #![deny(missing_docs)] at https://github.com/asomers/mockall/pull/102/files#diff-42d574447a5f4796e85afa40768d12bc.

My sample:

mod gen {
    #![warn(missing_docs)]
    use super::*;

    mock! {
        /// qwe
        pub Runtime {
            // qwe
            fn mock_workaround_spawn<O: 'static>(&self, future: Pin<Box<dyn Future<Output = O> + Send + 'static>>) {}
        }
        /// qwe
        trait Clone {
            /// qwe
            fn clone(&self) -> Self;
        }
    }
}

cargo expand shows some issues - there are a bunch of those.

[asomers]

Are you sure? I don't see any problems when I add #![deny(missing_docs)]

[asomers]

Reviewer timeout; committing.

[MOZGIII]

Thanks! Sorry for not responding. I'll open another issue if I still have trouble with the docs.