Pin to `latest` for 3.0 modules
Pin to `latest` for 3.0 modules

Reverts #335.

Pinning to `^0.1.0.prerelease.0` is not equivalent to `latest`, since has the effect of not installing the latest version on `npm install`, you have to also do `npm update`. This hurts us ergonomically on `npm install`, and doesn't help us since we already are releasing breaking changes on `prerelease`.

LLK/scratch-gui,cwillisf/scratch-gui,cwillisf/scratch-gui,LLK/scratch-gui,cwillisf/scratch-gui