update tox.ini file contents

tox.ini

@@ -30,16 +30,41 @@ exclude =
     *.pyc
     .eggs
 
-[testenv:lint]
-extras =
-    lint
-
+testenv:lint]
+skip_install = True
+commands_pre =
+deps =
+    mypy
+    pre-commit
 whitelist_externals =
     bash
 
 commands =
     pre-commit run --all-files --show-diff-on-failure {posargs: }
     bash mypy
+
 [testenv:docs]
 commands =
     sphinx-build docs/source docs/build -b html
+
+[testenv:release]
+basepython = python3
+deps =
+    build
+    twine
+passenv =
+    TWINE_PASSWORD
+    TWINE_REPOSITORY
+setenv =
+    TWINE_USERNAME = {env:TWINE_USERNAME:__token__}
+commands =
+    python -c "import shutil; shutil.rmtree('dist', ignore_errors=True)"
+    python -m build
+    python -m twine upload dist/*
+
+[testenv:changelog]
+basepython = python3
+extras =
+   changelog
+commands =
+   python3 bin/release changelog --no-draft