Prepare to release version 0.21.0

Author: adamreichold

CHANGELOG.md

@@ -2,6 +2,11 @@
 
 - Unreleased
 
+- v0.21.0
+  - Migrate to the new `Bound` API introduced by PyO3 0.21. ([#410](https://github.com/PyO3/rust-numpy/pull/410)) ([#411](https://github.com/PyO3/rust-numpy/pull/411)) ([#412](https://github.com/PyO3/rust-numpy/pull/412)) ([#415](https://github.com/PyO3/rust-numpy/pull/415)) ([#416](https://github.com/PyO3/rust-numpy/pull/416)) ([#418](https://github.com/PyO3/rust-numpy/pull/418)) ([#419](https://github.com/PyO3/rust-numpy/pull/419)) ([#420](https://github.com/PyO3/rust-numpy/pull/420)) ([#421](https://github.com/PyO3/rust-numpy/pull/421)) ([#422](https://github.com/PyO3/rust-numpy/pull/422))
+  - Add a `prelude` module to simplify importing method traits required by the `Bound` API. ([#417](https://github.com/PyO3/rust-numpy/pull/417))
+  - Extend documentation to cover some more surprising behaviours. ([#405](https://github.com/PyO3/rust-numpy/pull/405)) ([#414](https://github.com/PyO3/rust-numpy/pull/414))
+
 - v0.20.0
   - Increase MSRV to 1.56 released in October 2021 and available in Debain 12, RHEL 9 and Alpine 3.17 following the same change for PyO3. ([#378](https://github.com/PyO3/rust-numpy/pull/378))
   - Add support for ASCII (`PyFixedString<N>`) and Unicode (`PyFixedUnicode<N>`) string arrays, i.e. dtypes `SN` and `UN` where `N` is the number of characters. ([#378](https://github.com/PyO3/rust-numpy/pull/378))

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "numpy"
-version = "0.20.0"
+version = "0.21.0"
 authors = [
     "The rust-numpy Project Developers",
     "PyO3 Project and Contributors <https://github.com/PyO3>"

README.md

@@ -38,8 +38,8 @@ name = "rust_ext"
 crate-type = ["cdylib"]
 
 [dependencies]
-pyo3 = { version = "0.20", features = ["extension-module"] }
-numpy = "0.20"
+pyo3 = { version = "0.21", features = ["extension-module"] }
+numpy = "0.21"
 ```
 
 ```rust
@@ -93,8 +93,8 @@ fn rust_ext<'py>(_py: Python<'py>, m: &Bound<'py, PyModule>) -> PyResult<()> {
 name = "numpy-test"
 
 [dependencies]
-pyo3 = { version = "0.20", features = ["auto-initialize"] }
-numpy = "0.20"
+pyo3 = { version = "0.21", features = ["auto-initialize"] }
+numpy = "0.21"
 ```
 
 ```rust
@@ -132,7 +132,7 @@ on anything but that exact range. It can therefore be necessary to manually unif
 For example, if you specify the following dependencies
 
 ```toml
-numpy = "0.20"
+numpy = "0.21"
 ndarray = "0.13"
 ```