Added note to README stating that it is outdated.
Updated Google Analytics code.
Added 'use strict' to JavaScript files to force ECMAScript 5 strict mode.
Changed threadProcessor.setMaxThreadsToProcessSimultaneously from 3 to 2 to reduce loading time for images with a large filesize.
Refactored ThreadListController slightly.
Fixed problem where Imgur's 'Image does not exit' image' would be displayed. Fixed problem where GIFs hosted on Imgur wouldn't be loaded, only their static preview image.