A version 0.142.2 is perfectly possible with Semver, it just implies that the the developer has had a lot of iterations on the idea, but never got to the point

A version 0.142.2 is perfectly possible with Semver, it just implies that the the developer has had a lot of iterations on the idea, but never got to the point that they consider stable. If the software had a stable API at that point, but they were still using a 0.x.y version number, then they wouldn't be using Semver properly, since 0.x.y versions are for unstable initial development releases. https://semver.org/#spec-item-4 https://semver.org/#spec-item-4