I'm not the author. This is a new project and these versions are there so that the core could be minimum at the same time have versions with more features. As the project grows, I'm sure there will be only one variant or options for features could be specified during build time. For now, see it as pre alpha and the variants as a form of A/B testing to strike a balance between minimum size, essential features and good to have features. Bit tricky to balance. Invite you to hack and help balance - need more people there.