Comment by stephenr

Semver specifically stipulates that pre-1.0.0 is for unstable work.

> Major version zero (0.y.z) is for initial development. Anything may change at any time. The public API should not be considered stable.

It also allows for identifiers/metadata after the version eg 1.0.0-alpha or similar.

It also specifically says:

> Version 1.0.0 defines the public API.