I apologize for dropping the ball on this so long. It looks like there is a 0.3.0 release of verto, which was folded into krb5. However, It looks like there's not an upstream tarball on github for anything past 0.2.6.
Because I dropped the ball so much I'm under tight time pressure to get an update into Debian buster. I'm going to package 0.2.6, but if you either get me an official 0.3.0 tarball by Thursday or alternatively let me know that the changes between 0.2.6 and 0.3.0 are so critical I should go generate my own make dist even though I'm not upstream, I'll try to get 0.3.0 in. --Sam