Merge branch 'master' into format-code

diff --git a/setup.cfg b/setup.cfg
deleted file mode 100644
index 126bbbb..0000000
--- a/setup.cfg
+++ /dev/null

@@ -1,37 +0,0 @@
-[metadata]
-name = idna
-version = attr: idna.__version__
-author = Kim Davies
-author_email = kim+pypi@gumleaf.org
-description = Internationalized Domain Names in Applications (IDNA)
-license = BSD-3-Clause
-classifiers =
-  Development Status :: 5 - Production/Stable
-  Intended Audience :: Developers
-  Intended Audience :: System Administrators
-  License :: OSI Approved :: BSD License
-  Operating System :: OS Independent
-  Programming Language :: Python
-  Programming Language :: Python :: 3
-  Programming Language :: Python :: 3 :: Only
-  Programming Language :: Python :: 3.6
-  Programming Language :: Python :: 3.7
-  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 :: 3.13
-  Programming Language :: Python :: Implementation :: CPython
-  Programming Language :: Python :: Implementation :: PyPy
-  Topic :: Internet :: Name Service (DNS)
-  Topic :: Software Development :: Libraries :: Python Modules
-  Topic :: Utilities
-
-[options]
-python_requires = >=3.6
-packages=find:
-
-[options.packages.find]
-exclude =
-  tests*