Add project urls to pyproject.toml

Author: jdillard

pyproject.toml

@@ -31,6 +31,12 @@ dynamic = [
     "optional-dependencies",
 ]
 
+[project.urls]
+documentation = "https://sphinx-visualized.readthedocs.io/en/latest/index.html"
+download = "https://pypi.org/project/sphinx-visualized/"
+source = "https://github.com/jdillard/sphinx-visualized"
+changelog = "https://github.com/jdillard/sphinx-visualized/blob/master/CHANGELOG.rst"
+
 [tool.setuptools.dynamic]
 optional-dependencies = {dev = { file = ["requirements_dev.txt"] }}