Yea, I think that's the difference now. The known breaking change cadence compared to previous. I don't think there is a multi targeting approach that would work to be honest. What I've had to do in Vendr v2 to support v9 + v10 where there have been breaking changes is to use reflection to call the diffrent API's. Really not pretty though, but it's how you would have to do things to have a package work across breaking changes.