for maec placeholder template, now checks for maec 4.0 or 4.1
for maec placeholder template, now checks for maec 4.0 or 4.1

and it will check for any xsi:type in the maec 4.0 or 4.1 namespaces (previously it only looked for maec 4.0 MAEC4.0InstanceType instances):
 * 'http://stix.mitre.org/extensions/Malware#MAEC4.0-1' OR
 * 'http://stix.mitre.org/extensions/Malware#MAEC4.1-1'

STIXProject/stix-to-html,empereor/cvrf-to-html,STIXProject/stix-to-html,empereor/cvrf-to-html,empereor/cvrf-to-html,empereor/cvrf-to-html,STIXProject/stix-to-html,STIXProject/stix-to-html