* reject/retain paths for FTN networks
* Fix bug in FileEntry.findFiles() with meta pairs
* New well known file meta - mostly related to TIC
* Index of file_sha256
* FileEntry.persist() can update entries
* createMessageUuidAlternate(): Mmethod for FTN message v5 UUID generation when no MSGID to work with
* parseAbbreviatedNetNodeList() now works properly
* Add core/uuid_util.js for various UUID utilities such as v5 named UUID generation
* Fix message meta load/retrieval
* Add lookup for REPLY kludge -> MSGID -> local reply IDs
* Fix SEEN-BY additions @ export
* Don't override MSGIDs if they already exist
* Store MSGID @ export so it can be inspected later
* Add import functionality (working, but WIP!)
* Clean up bundles and packets after import
* Minor updates to ES6 in some areas
* Better bbs.js startup seq
* Better iterator support for loadModulesForCategory()
* Start work on loading message network modules & tieing in record() (WIP)
* FTN PacketHeader is now a ES6 class
* Various FTN utils, e.g. Via line creation