General reminders for documentation

• All descriptions should end with a fullstop
• Use @ignore for exports without documentation (e.g. for type aliases, props types, default exports)
• All functions should have a @return (even if void)
• Use {@link name} to create links
• Children props have type ReactNode
• Functional components have return type JSX.Element
• https://github.com/typescript-cheatsheets/react for more