v3.0.1

Bugfixes

• Explicitly exclude KVO-generated object subclasses from the schema.
• Fix regression where the type of a Realm model class is not properly determined, causing crashes
  when a type value derived at runtime by type(of:) is passed into certain APIs.
• Fix a crash when an Object subclass has implicitly ignored let
  properties.
• Fix several cases where adding a notification block from within a
  notification callback could produce incorrect results.