* more work on shared workers
* [https://wiki.mozilla.org/WebAPI/DataStore DataStore API]
* <s>[https://bugzilla.mozilla.org/show_bug.cgi?id=856410 Futures] </s>Promises (see also https://github.com/slightlyoff/Futures)
* continuing on temporary storage for IDB ({{bug|785884}})
* [https://github.com/sysapps/ SysApps spec work]