Release schedule about schemaspy

[npetzall]

Due to bad continuity from my part both project and milestones are abandoned, need to clean it up.

Breaking changes is a bit harder to explain, depending on which type of interface you're tracking. Arguments, output or even dependencies. I think we are just bundling a few bigger changes and removing some arguments.

But we are moving into the holidays and I'll try to get some time for the project and see what we can do I near time.