Added _binding and _namespace class-level properties to api classes
Changed to_obj() methods to reference self._binding. Added python-cybox constraint to setup.py
Updated copyright to 2014
Initial commit of namespace parsing code
Added first pass at intelligent namespace parsing to stix.Entity.to_xml(). Removed to_xml() from STIXPackage
Added support for outputting idgen namespace
Added support for exporting schemalocations
Fixed issue where CybOX default vocabularies namespace and schemalocation were not being exported
Added support for parsing namespaces from top-level Observables element within a STIX_Package element
Refactored namespace string code. Sort namespaces and schemalocations. Added pretty print flag. Added option to leave out the namespace output on export
Added namespace support for CIQ Identity extension. Added casts to CIQ Identity ext api classes to allow string parameters.
Fixed issue where pretty_print was not being set on export
Merge pull request #52 from STIXProject/namespaces