remove 'IntoListReader' trait

[danieleades]

No description provided.

[dwrensha]

This trait appears in user-facing API here:

capnproto-rust/capnp/src/raw.rs

Line 50 in 636e4d5

T: IntoInternalListReader<'a>,

After this change, the private ListReader type would appear there instead, which I would prefer not to expose in such an API. I don't want users clicking on documentation links trying to understand this function, and ending up in the capnp::private namespace, where they usually don't need to be.

I've added a bit of documentation here: 636e4d5

[danieleades]

This trait appears in user-facing API here:

capnproto-rust/capnp/src/raw.rs

Line 50 in 636e4d5

T: IntoInternalListReader<'a>,

After this change, the private ListReader type would appear there instead, which I would prefer not to expose in such an API. I don't want users clicking on documentation links trying to understand this function, and ending up in the capnp::private namespace, where they usually don't need to be.

I've added a bit of documentation here: 636e4d5

Can you not hide the type using #[doc(hidden)]?