Comment 6 for bug 991717

Uwe, before you get too far into this, let's think through how it should work with the library redesign and nested crates branches to save unnecessary work to merge them in the end. I think it might be a good idea to get the nested crates branch merged to the library redesign branch first, then you can begin your refactoring work from the library redesign branch. If I remember correctly, the only critical issue blocking the nested crates branch from being merged to library redesign branch is ensuring that the database schema updates work starting from a fresh database.