Reaching version 1 is meaningless. Their versioning, like many other projects, is completely botched.
"Oh look, we're getting to the high 0.9's, better call the next one 1.0.0!"
"Oh look, we're getting to the high 0.9's, better call the next one 1.0.0!"
Under this scheme, version numbers and the way they change convey meaning about the underlying code and what has been modified from one version to the next.
It's mentioned elsewhere in this thread, but it's not something I knew about beforehand so figured you may also find it helpful.