Parsedmarc

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- Add options for Elasticsearch prefixes and suffixes
- If an aggregate report has the invalid `disposition` value `pass`, change
it to `none`

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- Use report timestamps for Splunk timestamps

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- When saving aggregate reports in Elasticsearch store `domain` in
`published_policy`
- Rename `policy_published` to `published_policy`when saving aggregate
reports to Splunk

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- Add support for sending DMARC reports to a Splunk HTTP Events
Collector (HEC)
- Use a browser-like `User-Agent` when downloading the Public Suffix List and
GeoIP DB to avoid being blocked by security proxies
- Reduce default DNS timeout to 2.0 seconds
- Add alignment booleans to JSON output
- Fix `.msg` parsing CLI exception when `msgconvert` is not found in the
system path
- Add `--outgoing-port` and `--outgoing-ssl` options
- Fall back to plain text SMTP if `--outgoing-ssl` is not used and `STARTTLS`
is not supported by the server
- Always use `\n` as the newline when generating CSVs
- Workaround for random Exchange/Office365 `Server Unavailable` IMAP errors

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- Completely reset IMAP connection when a broken pipe is encountered

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- Finish incomplete broken pipe fix