- Introduce option `--background` for `daemon start` to send the new
process into the background.
- Implement a `ProcessDescr` which identifies a Husk process. This pays
attention to the possibility of a rollover of the process ids.
- Implement `daemon status`.
- Implement `daemon stop` which sends `SIG_INT` to a running Husk
process.
- Husk now not only encrypts outgoing emails (if possible) but also adds
a signature.
- Rework the internal handling of the signing key.
- Integrate the signing into the workflow of the daemon.
- Add a configuration option for a subject replacement.
- Move the content of what was stored in log4rs.yml into the main config
file, so that there is just one file to parse to get the complete
configuration.
- Create the global switch `--home` to pass/overload the value for
SEQUOIA_HOME in the configuration file.
- Add functionality to query online sources (Keyservers, etc) for
certificates.
- Use introducers to determine which UserIDs should be fetched from
online soources. Check certifications before importing certifiactes
into the local cert store.
- start docker image for local end-to-end testing.
- Added certstore and retrieval of the local trust root.
- Major work on keeping the context between calls to the milter.
- Added a context for an email in processing
- Added Husk specific errors