Connect once to APNS and send all pushmessages over that connection
Connect once to APNS and send all pushmessages over that connection

- Added some methods to manage the streams
- Supports switching from and to sandbox between messages (not of much use now, but it's future proof)
- Reconnects when connection is lost
- No changes in the interface
- Major performance win!

funkjedi/PushNotificationPackage,nucleartux/RMSPushNotificationsBundle,richsage/RMSPushNotificationsBundle,DABSquared/DABSquaredPushNotificationsBundle,DABSquared/DABSquaredPushNotificationsBundle,tomaszhanc/RMSPushNotificationsBundle,raulfraile/RMSPushNotificationsBundle,davedevelopment/RMSPushNotificationsBundle,DABSquared/DABSquaredPushNotificationsBundle,kuldeep199221/RMSPushNotificationsBundle,EDSI-Tech/RMSPushNotificationsBundle,Clevis/PushNotifications,peternijssen/RMSPushNotificationsBundle