Removed support for .NET 4.0; now targetting .NET 4.5+.
In order to keep up to date with latest Autofac dependency we need to drop .NET 4.0 support.
Use version 3.3.7 if you need .NET 4.0 support.
Signing of the assembly has been removed.
We're fundamentally against it; it causes more problems than it's worth.
Use version 3.1.X or below or feel free to argue your case at https://github.com/MRCollective/AutofacContrib.NSubstitute/issues.