Merge pull request #188 from jrconlin/master

Move socket close to per instance
Fixed missing note when Locking a device which has a passcode.
Merge pull request #189 from mozilla-services/fix-missing-note

Fixed missing note when Locking a device which has a passcode.
Merge pull request #194 from jrconlin/master

concurrency
Merge pull request #197 from jrconlin/master

Allow UTF8 lock screen messages
Merge pull request #199 from jrconlin/master

Add "accuracy", count utf8 runes correctly.
Merge pull request #207 from jrconlin/master

Issue #186