Support multiple signers of different types behind a HSM feature flag, and support in principle selecting which signer to use for which purpose. (#539)
This allows us to keep the full history of semantically important events, while not spamming the history and avoiding excessive use of disk space. See issues #370 and #423.
This is a substantial change. Highlights follow:
* Added a developer documentation section
* No longer using events for manifest/crl generation (#370)
* No longer using events for publication deltas (#423)
* Removed pre 0.6.0 migration code - people will have to upgrade to at least 0.6.0 first
* Added migration code for 0.6.0-0.8.1 to this
* Migrate repository by doing a keyroll. (#370)
* Remove archiving code for commands (no longer applicable)
Minor other fixes:
* Use a swap file when writing (avoid corrupt json if disk is full) (#370)
* Make removing publisher content idempotent for publishers already removed.
Co-authored-by: Ximon Eighteen <3304436+ximon18@users.noreply.github.com>
Co-authored-by: Jasper den Hertog <jasper@plainspace.com>
