Fix headers for release 0.21.2
treece918aad7e3155733ac3bb84bc4ecfa63527472b
-rw-r--r-- 3165 .flake8
-rw-r--r-- 1662 .gitattributes
-rw-r--r-- 393 .gitignore
-rw-r--r-- 616 .pre-commit-config.yaml
drwxr-xr-x - docutils
drwxr-xr-x - sandbox
drwxr-xr-x - web