Research and (potentially) implement repolinter

[atc0005]

https://github.com/todogroup/repolinter

Example checks:

git clone https://github.com/todogroup/repolinter
npx repolinter
✔ license-file-exists: found (LICENSE)
✔ readme-file-exists: found (README.md)
✔ contributing-file-exists: found (CONTRIBUTING)
✔ code-of-conduct-file-exists: found (CODE-OF-CONDUCT)
✔ changelog-file-exists: found (CHANGELOG)
✔ readme-references-license: File README.md contains license
✔ binaries-not-present: Excluded file type doesn't exist (**/*.exe,**/*.dll)
✔ license-detectable-by-licensee: Licensee identified the license for project: Apache License 2.0
✔ test-directory-exists: found (tests)
✔ integrates-with-ci: found (.travis.yml)
✔ source-license-headers-exist: The first 5 lines of 'index.js' contain all of the requested patterns.
...
✔ github-issue-template-exists: found (ISSUE_TEMPLATE)
✔ github-pull-request-template-exists: found (PULL_REQUEST_TEMPLATE)
✔ package-metadata-exists: found (Gemfile)
✔ package-metadata-exists: found (package.json)

This could help protect against the accidental loss of important files (e.g., README, license file) and if kept up to date could flag new best practice failures.

Further research is needed to determine how flexible the linting rules are (e.g, the index.js file doesn't apply here).