opensync downgrade to 0.22

[Kevin Kofler]

Juha Tuomala wrote:
> In my opinion, we should send people to manually compile and test
> the trunk and help the development

Users do not manually compile their software, and especially not from trunk.
If you want users to test your work, you need to do actually packagable
releases, even beta ones, but not completely broken ones with no stable
API/ABI and with plugins and apps in various states of brokenness and/or
bitrot.

        Kevin Kofler