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>The reason we bump this major version is that we can get rid of design decisions made in the past that currently block us and then we want to change defaults to more sensible settings that will benefit a greater audience

I don't know how to read this sentence other than "there are breaking changes we want to make"

The migration guide does say there are breaking changes, but the interpretation I have is "this won't have new features but allows us to develop new features".

I see. Just making sure I had it right :-)

Concretely, TFA lists a bunch of input validation that is being made more strict in the default configuration.

Not every product uses SemVer

But Polars does:

https://docs.pola.rs/development/versioning/

> Polars adheres to the semantic versioning specification:

And it does have breaking changes in 2.0. The original asker presumably missed that.

E:

On the other hand, that whole page on versioning seems inconsistent.