OpsLog v0.28.1

Changelog

• chore: release v0.28.1
• feat(webpub): SFTP alongside FTP and FTPS, with the server key checked
• feat(rotator): record the switch, and which rotor is really polled
• feat(cat): report a link that opens but never answers
• feat(cat): the transverter offset says when it rewrites a frequency
• feat(lookup): say when a zone came from cty.dat and not the callbook
• fix(dxcc): VK8 is ITU zone 55, not Western Australia's 58
• chore(changelog): the country-file fix belongs to 0.28.1
• fix(dxcc): the country file that knows districts have their own zones