Password-based HTTP basic authentication deprecation and removal

You can no longer use password-based HTTP basic authentication for the few endpoints on GitHub.com that previously supported it. The affected endpoints include Atom feeds, a legacy repository archive endpoint, and a GitHub Enterprise only “stafftools reports” endpoint. This functionality will continue to work with personal access tokens. Password-based HTTP basic authentication for these endpoints will continue to function for GitHub Enterprise, but is deprecated and will be removed in an upcoming release.