Changelog
- aa65922 GitHub CI: bump Go minor versions, 1.21/1.20
- a77984b Some README cleanups
- 5073649 bump version back to -dev for next release
- 0365763 cmdline flag validation: ensure exhaustive
- 82f6aca dependency bumps
- 66d8a9e go deps: bump to current
- 5a37bf6 go deps: bump to current
- 75f5e41 go deps: bump to current
- e554c4f protect against an SRV field starting with a hyphen
- d3e326d readme: document existence of pre-built binaries
- 7f36304 readme: show DNS_RESOLVER env var usage