Initial work to support 8.1
Adding 8.1 targeted plugin dll
Moving packages.config
Adding 8.1 domain assembly
much change
                   wow
    so commit
Merge branch 'feature/8.1' into develop
bumping version number
Adding SimpleInjector tests back (don't know why they were missing)
Updating nuget packages
Adding build script just for R# 8 solution
Merge branch 'release/8.1' into develop