refactor and clean up letterboxd and youtube_trailer plugins. Create common utils.js
refactor and cleanup random_picker. add async getXML to utils
refactor and cleanup rotten_tomatoes and themoviedb plugins
refactor and cleanup trakt and missing_episodes plugins, clean up main.js, remove unneeded calls
small fixes
performance improvement by making non-library sections asynchronous
made library section asynchronous, fix bug with fetching plex token
refactor options page, less calls to chrome storage
remove now unneeded async call in rotten_tomatoes plugin for data
refactor missing_episodes to avoid expensive appendChild for every episode tile insertion
implement server address override feature, use single call to retrieve extension settings
version bump to v0.5.0