0.4.0

Breaking

• Python 3.5 support has been dropped.

Bug Fixes

• JSON deserialisation will now deserialise attributes as Attributes object.
  #4

0.3.0

Breaking

• Namespace has been renamed to Registry.

Enhancements

• Added a compact JSON serialiser.
• Added a compact JSON deserialiser.
• Elements repr will now use an elements class name if the element is a
  subclass.

0.1.0

Initial release.