Breaking Changes for FastSerialization

[brianrob]

Implements a set of breaking changes for FastSerialization.

Highlights:

• SerializationSettings are now required when creating a stream for use with FastSerialization.
• All non-primitive types must be registered with Deserializer before they can be deserialized. Failure to do so will cause the deserialization operation to fail.

More Details:

• Rename SerializationConfiguration to SerializationSettings and make it a required parameter when creating a stream for use with FastSerialization.
• Make SerializationSettings read-only once passed into a reader or writer implementation by cloning the object whenever a setting is changed.
• Move StreamReaderAlignment from an optional parameter to reader constructors to a property on SerializationSettings.
• All non-primitive types must be registered with Deserializer before they can be deserialized. Failure to do so will cause the deserialization operation to fail. Registration can occur via a call to Deserializer.RegisterType or Deserializer.RegisterFactory.
• Deserializer also supports on-the-fly registration of types and factories via the Deserializer.OnUnregisteredType event.
• Removed Deserializer.RegisterDefaultFactory and Deserializer.TypeResolver in favor of Deserializer.OnUnregisteredType which allows for type resolution and factory creation to be performed in one place instead of two.