XEP-0333: Chat Markers
Add support for Google OAuth2
Merge pull request #294 from ChatSecure/X-OAuth2-Google

Add support for Google OAuth2
NSXMLElement attributeBoolValueForName now supports @"true" and @"false"
XMPPMessageArchiving xmppMessageArchivingStorage Property

Fixes #295
Missing Returns
XMPPCoreDataStorage autoRemovePreviousDatabaseFile API
XMPPRoster autoClearAllUsersAndResources API

Fixes #238
Fixes an Issue where deleting a resource wouldn't update a User's primary resource
Merge branch 'rh_master'
Stream negotiation for incoming socket requests now working correctly