PCL not well supported

[hugoterelle]

When using Portable Class library (PCL), some features are not available On line 747, you have

 currentlySubscribed.ForEach(sub => currentSubscriptions.Remove(sub)); 

Which does not exists in PCL.

You have to use:

 foreach (var sub in currentlySubscribed) currentSubscriptions.Remove(sub);

Greetings,
Hugo

[slodge]

Pull sent - #3

[nganbread]

Usages of GetMethod() and IsAssignableFrom() also need to be updated