Overall arch

[maraf]

Some templates and other services could be implemented using actual .NET assembly.
We should provide a way to extend used services.

Contracts

Place service contracts to separate assembly.
Consider versioning this assembly like VS services are versioned.
Deploy this assembly to NuGet.

We should use here feature interfaces and when needed append index on the end.
Namespace should be without version.

UI & infrastructure

All UI layer, VS package etc place in another assembly, referencing contracts from NuGet.

[maraf]

NuGet publish is postponed for now.