RegexManager: Add tests for interaction with `<unread>..</>`
RegexManager: Add tests for interaction with `<unread>..</>`

Related to: https://github.com/newsboat/newsboat/issues/37

newsboat/newsboat,der-lyse/newsboat,newsboat/newsboat,newsboat/newsboat,der-lyse/newsboat,der-lyse/newsboat,newsboat/newsboat,newsboat/newsboat,newsboat/newsboat,newsboat/newsboat,der-lyse/newsboat,der-lyse/newsboat,der-lyse/newsboat,newsboat/newsboat,der-lyse/newsboat,der-lyse/newsboat