Fix https filter URLs for some hosts, tidy up error handling/messages
Actually nevermind, build-deps just seems to be broken now.
Include ca-certificates in docker image: for DoH upstream client
Switch to offsite http 301 handling of www redirect
Bump dependencies, break image build into deps vs project for caching
Fixes to EDNS handling in client requests
#36 Build separate request for querying upstreams
#35 Support OPT NSID option in server, add version SRV record