pass on contacts notifications
Fixed emit event on stack level
Merge branch 'master' into receive_contacts_notifications
Updated protocolentities/message.py

Now getFrom, getTo and getParticipant contain the same parameter
Update message.py
Merge branch 'patch-1' of https://github.com/ikkebr/yowsup into ikkebr-patch-1
Merge branch 'ikkebr-patch-1'
Merge branch 'receive_contacts_notifications' of https://github.com/jerrywhite0/yowsup into jerrywhite0-receive_contacts_notifications
Merge branch 'jerrywhite0-receive_contacts_notifications'
Handle contact update notification