Many tools use period prefixes to hide their config files. For example, looking at this repo and another:

• .appveyor.yml
• .codecov.yml
• .coveragerc
• .csslintrc
• .editorconfig
• .git
• .gitattributes
• .github
• .gitignore
• .idea
• .jshintignore
• .markdownlintrc
• .pre-commit-config.yaml
• .pytest_cache
• .readthedocs.yml
• .testmondata
• .tox
• .travis.yml

Some of these, like appveyor, codecov and readthedocs, also allow prefixing the name with a dot or not.

It would be good if MKDocs would also allow .mkdocs.yml, so the config file can also be hidden along with other dotfiles.

Thank you!