Parsedmarc

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- Normalize `Delivery-Result` value in forensic/failure reports (issue 76)
Thanks Freddie Leeman of URIports for the troubleshooting assistance

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- Fix Elasticsearch index creation (closes issue 74)

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- Set `number_of_shards` and `number_of_replicas` to `1` when creating indexes
- Fix dependency conflict

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- Fix the `monthly_indexes` option in the `elasticsearch` configuration section

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- Fix `strip_attachment_payloads` option

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- Fix IMAP IDLE response processing for some mail servers (67)
- Exit with a critical error when required settings are missing (68)
- XML parsing fixes (69)
- Add IMAP responses to debug logging
- Add `smtp` option `skip_certificate_verification`
- Add `kafka` option `skip_certificate_verification`
- Suppress `mailparser` logging output
- Suppress `msgconvert` warnings