Add a pyproject.toml file for modern installers.

Author: ashleysommer

AUTHORS.rst

@@ -64,3 +64,8 @@ Patches and suggestions
 - Hugo van Kemenade
 - Mark Vasilkov
 
+
+HTML5Lib-modern
+---------------
+
+- Ashley Sommer

pyproject.toml

@@ -0,0 +1,43 @@
+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "html5lib-modern"
+authors = [
+    # HTML5Lib-modern author:
+    {name = "Ashley Sommer", email = "[email protected]"},
+    # Original HTML5Lib author:
+    {name = "James Graham", email = "[email protected]"},
+]
+description = "HTML parser based on the WHATWG HTML specification"
+requires-python = ">=3.8"
+license = {file = "LICENSE"}
+classifiers = [
+    'Development Status :: 5 - Production/Stable',
+    'Intended Audience :: Developers',
+    'License :: OSI Approved :: MIT License',
+    'Operating System :: OS Independent',
+    'Programming Language :: Python',
+    'Programming Language :: Python :: 3',
+    'Programming Language :: Python :: 3.8',
+    'Programming Language :: Python :: 3.9',
+    'Programming Language :: Python :: 3.10',
+    'Programming Language :: Python :: 3.11',
+    'Programming Language :: Python :: Implementation :: CPython',
+    'Programming Language :: Python :: Implementation :: PyPy',
+    'Topic :: Software Development :: Libraries :: Python Modules',
+    'Topic :: Text Processing :: Markup :: HTML'
+]
+dependencies = []
+dynamic = ["version", "readme"]
+
+[tool.setuptools.dynamic]
+version = {attr = "html5lib.__version__"}  # any module attribute compatible with ast.literal_eval
+readme = {file = ["README.rst", "AUTHORS.rst"]}
+
+[tool.setuptools.packages.find]
+where = ["."]  # list of folders that contain the packages (["."] by default)
+include = ["html5lib*"]  # package names should match these glob patterns (["*"] by default)
+exclude = ["html5lib.tests*"]  # exclude packages matching these glob patterns (empty by default)
+namespaces = false  # to disable scanning PEP 420 namespaces (true by default)

setup.py

@@ -62,7 +62,6 @@ def default_environment():
     'License :: OSI Approved :: MIT License',
     'Operating System :: OS Independent',
     'Programming Language :: Python',
-    'Programming Language :: Python :: 2',
     'Programming Language :: Python :: 3',
     'Programming Language :: Python :: 3.8',
     'Programming Language :: Python :: 3.9',