Fetch user id of a Twitch username or the username of a Twitch user id.
Simple extension that converts Twitch usernames to user ids, and user ids to usernames. Will notify you if the username or user id is invalid.
Version 1.5: Auto detection (thanks GhostZero). Copy link and message added. Success/error messages shown/hidden as appropriate.
Version 1.4: Adds support for new Twitch API (Helix), and slight UI changes to make usage easier.
