* deprecate `wrap_pyfunction` with `py` argument
The Python token in `wrap_pyfunction` is not handled automatically by
`WrapPyFunctionArg`, for backwards compatibility. This uses deref
specialization to deprecate this variant.
* merge `Extractor`s
* add deprecation ui test, revert closure variant due to test failure
* fix nightly
* deprecate the use of `PyCell` in favor of `Bound` and `Py`
* update `FromPyObject` for `T: PyClass + Clone` impl
* move `PyCell` deprecation to the `gil-refs` feature gate and add a migration note
* deprecate `PyCell::new` in favor of `Py::new` or `Bound::new`
* update deprecation warning
Co-authored-by: David Hewitt <mail@davidhewitt.dev>
---------
Co-authored-by: David Hewitt <mail@davidhewitt.dev>
* Use the new bound API instead of .as_ref(py)
* Move import into a nested scope
* Use to_cow instead of to_str for compatibility
`to_str` is not available before Python 3.10 on the limited api.
* Relax &self lifetimes
* Use Bound<'py, PyAny> in test Mapping signatures
* Use .as_bytes(py)
* Simplify ThrowCallback::throw signature
* Avoid .as_any call with Py api instead of Bound
* port `Python::import` to `Bound` API
* tidy up imports in tests/test_datetime_import.rs
---------
Co-authored-by: David Hewitt <mail@davidhewitt.dev>
* Added a couple basic tests
* Implemented suggested change
* Fixed type inference
* cargo fmt
* Finished tests and removed warnings
* Include in CHANGELOG.md
* Moved test into separate file
* &'static str and function rename
* Mention in the book
* Removed a lot of clutter, unified some code
* Started using syn::parse::Parse for pyfunction attributes
* No more newlines between imports
* Renamed `#[prop(get, set)]` to `#[pyo3(get, set)]`
* `#[pyfunction]` now supports the same arguments as `#[pyfn()]`
* Some macros now emit proper spanned errors instead of panics.
