'System.ValueTuple, Version=0.0.0.0 required for Add-Migration on .NET 4.6.1 Class Library

https://stackoverflow.com/questions/45978173/system-valuetuple-version-0-0-0-0-required-for-add-migration-on-net-4-6-1-cla

<PropertyGroup>
    <TargetFramework>net461</TargetFramework>

    ....

    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
    <GenerateBindingRedirectsOutputType>true</GenerateBindingRedirectsOutputType>
</PropertyGroup>