This needs more consideration, for backwards compatibility the pure-API
modules might compile against an older API version (defensively!),
while the API-only MCAccess might need an extra module compiling against
what it needs.
Moving big parts of code between sub-projects. Some refactoring was
needed to unlink some classes. Deprecated methods removed. Some utility
methods were moved to differently named utilities. Few signatures
changed (e.g. BlockProperties.init). Most changes should only concern
bugs or developers who dug into some NCP deeply (not sure those exist).
It should still all be there.
