3.5.4 Release

Lot's of bugs closed.
Two new entities "IPv6" and "CVE" will be detected automatically.
Auto tagging of splunk base alerts based on the splunk search index= tag= or sourcetype= commands.
All tags and sources are now stored as lower case regardless of input.
Marking and Linking are now available (documentation to follow)
Some initial support for TLP marking of Alerts/Event/Intel/etc.
List view indication of Alerts/Events/etc that have task entries associated