• First non-beta release!
• Convert MeasureSource, DigitalSignature, Contributor, Personnel types to use
  TypedField implementation.
• Convert all existing objects to use TypedField implementation.
• Add Account, UserAccount, GUIObject, GUIWindow, GUIDialogBox, WinEventLog,
  Volume, WinVolume, Disk, DiskPartition objects.
• Add Base64Binary and Name object property types.
• Add DataSegment type.
• Add equality checks using TypedFields.
• Clean up Entity and EntityList classes.
• Allow TypedFields to have multiplicity >1.
• Simplify implementation of BaseObjectPropertyType subclasses.
• Add default to_obj, to_dict, from_obj, and from_dict functions on the base
  Entity class.
• Allow custom callbacks to be run after setting a TypedField on a type.
• Allow specifying which TypedFields should be used in comparisons.
• Restructure imports to collapse the cybox.common and cybox.core packages.
• Expand examples.
• [#46] [#48] [#49] [#51] Typo/bug fixes.
• Various other typo corrections, bug fixes, and style fixes.