* Add support for listening to multiple specific addresses in caucased.
* shell implementation does not rely on an external file anymore.
* Do not start listening on https port before wrapping sockets with an ssl context
* Make caucase-updater usable by anonymous services (ex: they only need to connect to a caucase-certified service, without authenticating themselves using caucase)
* Use stricter file permissions for caucased sqlite database.
* Include caucase version in user agent header.
* Make caucased logging format more similar to apache's default.
* Fix caucased https certificate renewal. Fixes a crash which happens every 2 months.
* Make caucase-updater retry on network errors. Fixes crashes on transient network error.
