> I've looked into it months ago and it seems that there are a lot of breaking changes on every release and this scares me from using it.

Don't worry, as soon as Auntie Apple, Uncle Uber or someone as large as Mr Microsoft goes and adopts Crystal as soon as it reaches 1.0, then we will all immediately run to learning it just like we all did for Kubernetes, Docker, Elixir, Go and finally with its great success and without any formal introduction, we have all wanted to purse learning Mozilla's new and most excellent general-purpose programming language:

Rust.