Fixed some issues with the MAEC Malware extension. ns0 no longer printed as a namespace alias. Parsing input document works now.
Merge remote-tracking branch 'origin/master' into vocabs
Added comment to vocabs
Fixed potential issue with openioc test mechanism extension
Merge remote-tracking branch 'origin/master' into vocabs
Updated ex_01.xml to use updated IndicatorType CV
Reworked VocabString to lookup and instantiate the correct implementation during from_dict() and from_obj() execution. Removed unnecessary stix.incident.effects module. Removed stix.common.Relationship class as it was really just VocabString in disguise