Full changelog for older versions is available here.
4.2.3
As you can tell, I don't leave reddit and youtube much. To be fair, the twitching issue was intermittent on twitch.
Chrome users: as a result of Chrome's shortcomings, there now exists one potential performance issue. If you notice any performance issues, please contact me via github, email or reddit (see: 'report a problem' tab of this popup).