Decide requirements for 1.0.0 release

[MattMS]

While in 0.x.x, I am still trying to follow the semver rules but I don't want this to cruise in 0-land forever.

[MattMS]

From semver FAQ:

How do I know when to release 1.0.0?

If your software is being used in production, it should probably already be 1.0.0. If you have a stable API on which users have come to depend, you should be 1.0.0. If you're worrying a lot about backwards compatibility, you should probably already be 1.0.0.