Switch to fully dynamic metadata

[ddelange]

follow-up on #69, also adds classifiers

--- wheel_old/blake3-1.0.7.dist-info/METADATA
+++ wheel_new/blake3-1.0.7.dist-info/METADATA
@@ -3,5 +3,109 @@
 Metadata-Version: 2.4
 Name: blake3
 Version: 1.0.7
+Classifier: Development Status :: 5 - Production/Stable
+Classifier: Programming Language :: Python
+Classifier: Programming Language :: Python :: 3 :: Only
+Classifier: Programming Language :: Python :: Free Threading
+Classifier: Programming Language :: Rust
+Classifier: Topic :: Security
+Classifier: Topic :: Security :: Cryptography
+Classifier: Topic :: Utilities
 Requires-Dist: typing-extensions>=4.6.0 ; python_full_version < '3.12'
 License-File: LICENSE
+Summary: Python bindings for the Rust blake3 crate
 Home-Page: https://github.com/oconnor663/blake3-py
+Author: Jack O'Connor <oconnor663@gmail.com>
+Author-email: Jack O'Connor <oconnor663@gmail.com>
+License: CC0-1.0 OR Apache-2.0
 Requires-Python: >=3.8
+Description-Content-Type: text/markdown; charset=UTF-8; variant=GFM
+Project-URL: Source Code, https://github.com/oconnor663/blake3-py
+
+# blake3-py [![tests](https://github.com/oconnor663/blake3-py/actions/workflows/tests.yml/badge.svg?branch=master&event=push)](https://github.com/oconnor663/blake3-py/actions/workflows/tests.yml) [![PyPI version](https://badge.fury.io/py/blake3.svg)](https://pypi.python.org/pypi/blake3)
+
+Python bindings for the [official Rust implementation of
+BLAKE3](https://github.com/BLAKE3-team/BLAKE3), based on
+[PyO3](https://github.com/PyO3/pyo3). These bindings expose all the features of
+BLAKE3, including extendable output, keying, and multithreading. The basic API
+matches that of Python's standard
+[`hashlib`](https://docs.python.org/3/library/hashlib.html) module.
+
+## Examples
...