Module pyasync

Old module which contained some implementation details of the #[pyproto] module.

Prefer using the same content from pyo3::pyclass, e.g. use pyo3::pyclass::IterANextOutput instead of use pyo3::class::pyasync::IterANextOutput.

For compatibility reasons this has not yet been removed, however will be done so once https://github.com/rust-lang/rust/issues/30827 is resolved.

Re-exports

• pub use crate::pyclass::IterANextOutput;
  Deprecated
• pub use crate::pyclass::PyIterANextOutput;
  Deprecated