* Closes#653
Add security disclaimer for git-secret-killperson specifying what is and is not readable by a user after having been removed from the repository's keyring
* Document addition of disclaimer in changelog
* Migrate docs to master branch, add action to deploy to pages branch on push
* Update docs, build pipeline to reflect new method of updating gh-pages
* Removed make build-gh-pages from post-commit hook
Co-authored-by: Josh Rabinowitz <joshr@joshr.com>