iOS 2.1.5 release notes

Somehow I can’t find the release notes for iOS 2.1.5 anywhere (@slagle).

Anways, just found a bug that causes the iOS to crash after inclusion of a CT100/CTXX thermostat and reported it.
Works fine on Android and after a poll/refresh, just that default values (I think one of them in a null) is causing the iOS to crash.