Use build for building sdist and wheels

Author: sigmavirus24

tox.ini

@@ -44,15 +44,17 @@ commands = {posargs}
 
 [testenv:build]
 deps =
+    build
     wheel
 commands =
-    python setup.py sdist bdist_wheel
+    python -m build
 
 [testenv:release]
 deps =
     {[testenv:build]deps}
     twine>=1.4.0
 commands =
+    python -c 'import shutil; shutil.rmtree("dist/", ignore_errors=True); shutil.rmtree("build/", ignore_errors=True)'
     {[testenv:build]commands}
     twine upload {posargs:--skip-existing dist/*}