Stays connected through calls

• If a call or another app briefly takes the sound while Slumbi is in the background, the connection now holds — and after a longer call, Slumbi reconnects by itself.
• When two phones on the same Wi-Fi can't reach each other, Slumbi now says why — a router that keeps devices apart, or a guest network — and what to change.
• Slumbi now tells you when a Baby Unit nearby uses a different account, even if the phones aren't on the same Wi-Fi.

Plus a number of smaller fixes.