Oh boy another Major release. Lots of optimization on both back-end and front-end here.

Back-end

Only send necessary data about counter updates (bandwidth saving)
Turned the "season" setting for sounds to a "source" setting to allow for easier working with adding new sounds from various sources that may not be a specific season
Safeguarding against soundboard events carrying a non-existent sound
Replace Socket.IO in favor of uWS (re-run npm install on installation of this version!)

Front-end

Default to ogg sound files and fallback to mp3, drop aac completely
Image optimization for share buttons
Replace low-resolution/quality sidebar image with a vector graphic
Specify width and height attributes for html img elements
Optimize CSS delivery (fonts & style template)
Optimize JS delivery (google analytics & site-specific scripts)
Updates for the CSS rules concerning the website background
Fix display of index page main counter on Firefox (Nightly)
Rename "version" page to "versions" as this fits better
Remove unnecessary CSS overspecification
Add background randomization (six at the moment) with option of choosing to display only one specific one
Make the default background color (no image) black to ease page load looks
Make the index page accessible on both the root path ("/"), the name without extensions ("/index") and the name with the extension ("/index.html")