@techee ok, I havn't examined the API in detail, but yeah sure changes like that, which are needed to actually make it work, need to be handled too. But your point is for this PR to support the common functionality across versions. Anything thats new or was removed should be dropped at this stage.
If there are fancy new features in new versions that people want to use that can be separate PRs later and simulating functionality from old versions thats missing can also be added later.
Lets keep it simple for now.