Carries upstream 0.16.23 -- the DSN, POP3, Sieve, DMARC-report, ACME and DNSSEC-resolver fixes in its own change log -- with the files it changed marked under AGPL section 5(a), and one upstream test dropped that the fork's routing makes meaningless. It is also the first release whose tag attaches binaries: a host install can now fetch inbuxa-linux-amd64.tar.gz or inbuxa-linux-arm64.tar.gz instead of pulling the image and copying the file out of it.