Even if this change is not merged into ValueView? https://github.com/wmde/ValueView/pull/16/files

In that case the header here is deceptive. How about "Internal enhancements".

Ofc one needs to keep in mind that it is not because a given user does not break, that the changes do not have compatibility impact. If they break any of the public APIs, 0.3 ought to be used. Generally knowledge of components using this one should not impact how this is done.