Update project metadata and switch build-tool to hatchling

To keep build-compatibility with Python 3.6, I've switched the build
backend from `setuptools` to `hatchling`. `setuptools` only supports
`pyproject.toml` from version 61 onwards, which itself isn't compatible
with Python 3.6. This does not mean we have to fully use Hatch as we can
still create build using `python -m build`. Hatchling automatically
includes all non-gitignored files, so the `MANIFEST.in` file has been
removed.

MANIFEST.in

-include CHANGELOG.md
-include CONTRIBUTING.md
-include CREDITS.md
-include README.md
-include LICENSE.md
-# prospector config - https://github.com/landscapeio/prospector
-include .landscape.yaml
-include .editorconfig
-include tox.ini
-graft docs
-graft examples

pyproject.toml

 [project]
 name = "mwclient"
-version = "0.10.1"
+dynamic = ["version"]
 description = "MediaWiki API client"
 readme = "README.md"
-requires-python = ">=2.7"
-license = { file = "LICENSE.md" }
-keywords = ["mediawiki", "wikipedia"]
+requires-python = ">=3.6"
 authors = [
-  { name = "Bryan Tong Minh", email = "bryan.tongminh@gmail.com" }
+    { name = "Bryan Tong Minh", email = "bryan.tongminh@gmail.com" },
 ]
-maintainers = []
+keywords = ["mediawiki", "wikipedia"]
 classifiers = [
-  "Development Status :: 3 - Alpha",
-  "Intended Audience :: Developers",
-  "Topic :: Software Development :: Build Tools",
-  "License :: OSI Approved :: MIT License",
-  "Programming Language :: Python",
-  "Programming Language :: Python :: 2.7",
-  "Programming Language :: Python :: 3.5",
-  "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",
+    "Development Status :: 5 - Production/Stable",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: MIT License",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python",
+    "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",
+    "Topic :: Internet :: WWW/HTTP",
+    "Topic :: Software Development :: Libraries :: Python Modules",
 ]
 dependencies = [
-  "requests-oauthlib",
-  "six"
+    "requests",
+    "requests-oauthlib",
 ]
 
 [project.optional-dependencies]
-test = [
-  'mock;python_version<"3.3"',
-  'pytest',
-  'pytest-cov',
-  'responses>=0.3.0',
-  'responses!=0.6.0',
-  'setuptools'
+testing = [
+    "pytest",
+    "pytest-cov",
+    "responses>=0.3.0",
+    "responses!=0.6.0",
+    "setuptools",
 ]
 
 [project.urls]
-"Homepage" = "https://github.com/mwclient/mwclient"
-"Bug Reports" = "https://github.com/mwclient/mwclient/issues"
+Documentation = "https://mwclient.readthedocs.io/"
+Repository = "https://github.com/mwclient/mwclient"
+Issues = "https://github.com/mwclient/mwclient/issues"
+Changelog = "https://github.com/mwclient/mwclient/releases"
 
 [tool.pytest.ini_options]
 addopts = "--cov=mwtp --cov-report=html --color=yes"
 testpaths = [
-	"test"
+    "test"
 ]
 
 [build-system]
-requires = ["setuptools>=40.6.0", "wheel"]
-build-backend = "setuptools.build_meta"
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[tool.hatch.version]
+path = "mwclient/client.py"
+
+[tool.hatch.build.targets.sdist]
+exclude = [
+    "/.flake8",
+    "/.gitattributes",
+    "/.github",
+    "/.readthedocs.yaml",
+]
 
 [tool.bumpversion]
 current_version = "0.11.0"
 commit = true
 tag = true
 
-[[tool.bumpversion.files]]
-filename = "setup.py"
-search = "version='{current_version}'"
-replace = "version='{new_version}'"
-
 [[tool.bumpversion.files]]
 filename = "mwclient/client.py"
 search = "__version__ = '{current_version}'"

setup.cfg

-[aliases]
-test = pytest
-
 [flake8]
 max-line-length = 90
-ignore = 
+ignore =
     # Line break before binary operator
     W503

tox.ini

@@ -14,13 +14,8 @@ python =
     3.13: py313
 
 [testenv]
-deps =
-    pytest
-    pytest-cov
-    responses
-    setuptools
-    mock
-commands = pytest {toxinidir}/test
+extras = testing
+commands = pytest -v --cov mwclient test
 
 [testenv:flake]
 deps =
@@ -31,7 +26,7 @@ commands =
 [testenv:integration]
 deps =
     pytest
-commands = py.test test/integration.py -v
+commands = pytest test/integration.py -v
 
 [testenv:mypy]
 deps =