v2.0.0

This is the first publicly-released version of the ORM abstractions and implementations library, since moving into this monorepo.

All of the NuGet packages contained within this repo are published at version 2.0.0.

Why not v1.0.0?

The reason for beginning at version 2.0.0 and not 1.0.0 is because some of the constituent packages have already been released under the same names, at version 1.x. In places where package names didn't need to change and were kept, this would have caused confusion if I had kept with a 1.x numbering scheme. Starting with 2 makes it clear that this is a major/breaking change.