* Create new articles, update index
* Update links to changed filename
* Add "GitHub security features" article
* Add "Securing your repository" guide
* Add versioning for article link
* Update intro
* Add "Securing your organization" guide
* add missing liquid tag
* fix failing tests
* add reviewer feedback
* Update index to use `children` frontmatter
* Add dependency review to "securing your org"
* Update AE versioning
* Add dependency review to "securing your repo"
* Clarify where a button is located
* Update links to renamed article
* Move dependency graph info
* Add table of security features
* Remove full stops from list items
* Remove table of security features
* update versioning