v2.0.0-alpha2

• Now using namespaces in preparation of moving to SilverStripe 4
• Refactored DBFields and split DataList into ArrayList and DataList
  • Renamed SerializedDBFieldHasOne to zauberfisch\SerializedDataObject\DBField\DataObjectField (Stores one serialized object)
  • Renamed SerializedDBFieldHasMany to zauberfisch\SerializedDataObject\DBField\ArrayListField (Stores a list of serialized objects)
  • Added DataListField (Stores list of IDs of DataObjects)
• Added UploadField subclass to save into serialized DBField