Updated NuGet packages
Merge branch 'master' of https://github.com/Redth/PushSharp

# By Robb
# Via Jon Dick (1) and Robb (1)
* 'master' of https://github.com/Redth/PushSharp:
  Fixed leaking handles in PushServiceBase.DoChannelWork
Reduce log verbosity for channel scale monitoring.  Fixes #256