Algernon 1.17.12

• Improve value conversions in Lua, ref #119.
• Improve the experimental WebAuthn support.
• Add the --strict-symlinks flag, for not following symlinks that lead out of the served directory.
• Add htmlescape and use it in serverconf.lua.
• Keep the server log and the access logs open, instead of opening and closing them for every line + improve log rotation abilities.
• Rewrite the reverse proxy to use httputil.ReverseProxy.
• Only look ahead at proxied responses that have a Content-Length.
• Also log requests that are handled by a reverse proxy.
• Store Let's Encrypt certificates in $XDG_DATA_HOME/certmagic, $HOME/.local/share/certmagic or /var/lib/algernon.
• When using --domain, also serve the localhost directory for the current IP addresses.
• Add the --dirbaseurl flag, for placing a base URL in front of the links in the directory listing, ref #90.
• Add the SetDirBaseURL Lua function that can be used from serverconf.lua, for the same purpose as --dirbaseurl.
• Replace the graceful package with http.Server.Shutdown from the standard library.
• Set new log files to mode 0640.
• Reject AddReverseProxy endpoint URLs that have no scheme or host.
• Improve how certmagic-related events are logged.
• Improve how --letsencrypt starts and retries.
• Update dependencies.
• Update documentation.