Better error output when misconfigured (for example when an invalid Twitter List is selected).
Tweaks to automatically take advantage of CloudFlare caching when available.
Adds option to utilize AddToAny social buttons instead of Digital Point Social Buttons (under AdminCP -> Options -> Search Engine Optimization)
If you utilize Google Analytics, interactions with the social buttons are shown within your Google Analytics account (under Acquisition -> Social -> Plugins)
Fixed issue with old versions of PHP. If you are using PHP 5.4 or higher, you don't need this.