[https://bugzilla.mozilla.org/show_bug.cgi?id=1406181 Replace storage.local] implementation: For improved extension performance, we will replace the storage.local implementation with something more efficient. (62)
[https://bugzilla.mozilla.org/show_bug.cgi?id=1361474 Interpreter ICs]: This will improve interpreter speed increasing the performance of JavaScript on sites and apps. (20182019)
[https://bugzilla.mozilla.org/show_bug.cgi?id=1336227 Faster startup first paint]: Firefox will show a browser window as soon as possible after startup, not waiting on the full stack to load. (63)