Looking for forward/backward guarantees between versions

I'm unable to find information about forwards/backwards compatibility expectations between versions of cloudpickle.

For example if I dump data encoded in version 1.4 of cloud pickle should version 1.5 of cloudpickle be able to decode it?

From my reading it seems like there should be expectation, is that right? If so ideally that could be marked in the readme.

Relate issue:
https://github.com/cloudpipe/cloudpickle/issues/126