improved preamble to point to fork source, added reasoning why I
forked and point to report generator documentation below

to ignoring domain instead of failing completely

they are not TLS nor MTA-STS policy related

by implementing our own to_text() method for TXT records that only
returns ONE quoted string

they are not TLS nor MTA-STS policy related

based on:
* same sender (if mentioned in log entries)
* recipient is a TLSRPT rua mailto: target (this is not 100% save)

only sending cc mails if POST was successfull

fix: returning none for "Found a good MTA-STS DNS entry and no policy is available from the cache or http"
If a valid TXT record is found but no policy can be fetched via
HTTPS (for any reason), and there is no valid (non-expired) previously
cached policy, senders MUST continue with delivery as though the
domain has not implemented MTA-STS.
also storing full MTA-STS policy as a string to the report script
fix: providing better 'mode' for LMDB creation
extensive debug logging

Too many brackets on the eq statement.....  Fixed