Replace setup.py with pyproject.toml

This also moves the README from rST to markdown

README.md

@@ -0,0 +1,55 @@
+# Zeep: Python SOAP client
+[![Documentation Status](https://readthedocs.org/projects/python-zeep/badge/?version=latest)](https://readthedocs.org/projects/python-zeep/)
+[![Python Tests](https://github.com/mvantellingen/python-zeep/workflows/Python%20Tests/badge.svg)](https://github.com/mvantellingen/python-zeep/actions?query=workflow%3A%22Python+Tests%22)
+[![Coverage Status](http://codecov.io/github/mvantellingen/python-zeep/coverage.svg?branch=master)](http://codecov.io/github/mvantellingen/python-zeep?branch=master)
+[![PyPI version](https://img.shields.io/pypi/v/zeep.svg)](https://pypi.python.org/pypi/zeep/)
+
+A Python SOAP client
+
+## Highlights:
+- Compatible with Python 3.9, 3.10, 3.11, 3.12, 3.13 and PyPy3
+- Built on top of lxml, requests, and httpx
+- Support for Soap 1.1, Soap 1.2, and HTTP bindings
+- Support for WS-Addressing headers
+- Support for WSSE (UserNameToken / x.509 signing)
+- Support for asyncio using the httpx module
+- Experimental support for XOP messages
+
+Please see the [documentation](http://docs.python-zeep.org/) for more information.
+
+## Status
+
+> [!NOTE]
+> I consider this library to be stable. Since no new developments happen around the SOAP specification, it won't be updated that much. Good PRs which fix bugs are always welcome, however.
+
+
+## Installation
+
+```bash
+pip install zeep
+```
+
+Zeep uses the lxml library for parsing XML. See [lxml installation requirements](https://lxml.de/installation.html).
+
+## Usage
+
+```python
+from zeep import Client
+
+client = Client('tests/wsdl_files/example.rst')
+client.service.ping()
+```
+
+To quickly inspect a WSDL file, use:
+
+```bash
+python -m zeep <url-to-wsdl>
+```
+
+Please see the [documentation](http://docs.python-zeep.org) for more information.
+
+# Support
+
+If you want to report a bug, please first read [the bug reporting guidelines](http://docs.python-zeep.org/en/master/reporting_bugs.html).
+
+Please only report bugs, not support requests, to the GitHub issue tracker.

pyproject.toml

@@ -1,3 +1,61 @@
+[project]
+name = "zeep"
+version = "4.2.1"
+description = "A Python SOAP client"
+readme = "README.md"
+license = { text = "MIT" }
+authors = [
+    { name = "Michael van Tellingen", email = "[email protected]" }
+]
+requires-python = ">=3.8"
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "License :: OSI Approved :: MIT License",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: Implementation :: CPython",
+    "Programming Language :: Python :: Implementation :: PyPy",
+]
+dependencies = [
+    "attrs>=17.2.0",
+    "isodate>=0.5.4",
+    "lxml>=4.6.0",
+    "platformdirs>=1.4.0",
+    "requests>=2.7.0",
+    "requests-toolbelt>=0.7.1",
+    "requests-file>=1.5.1",
+    "pytz",
+]
+
+[project.urls]
+Repository = "https://github.com/mvantellingen/python-zeep"
+Documentation = "https://docs.python-zeep.org"
+Changelog = "https://github.com/mvantellingen/python-zeep/blob/main/CHANGES"
+
+[project.optional-dependencies]
+docs = ["sphinx>=1.4.0"]
+test = [
+    "coverage[toml]==7.6.2",
+    "freezegun==1.5.1",
+    "pretend==1.0.9",
+    "pytest-cov==5.0.0",
+    "pytest-httpx",
+    "pytest-asyncio",
+    "pytest==8.3.3",
+    "requests_mock==1.12.1",
+    # Linting
+    "isort==5.13.2",
+    "flake8==7.1.1",
+    "flake8-blind-except==0.2.1",
+    "flake8-debugger==4.1.2",
+    "flake8-imports==0.1.1",
+]
+async = ["httpx>=0.15.0"]
+xmlsec = ["xmlsec>=0.6.1"]
+
 [build-system]
 requires = ["setuptools>=40.6.0", "wheel"]
 build-backend = "setuptools.build_meta"
@@ -31,3 +89,6 @@ markers = [
     "requests",
     "network: test case requires network connection",
 ]
+
+[tool.flake8]
+max-line-length = 99