anchor.diff:                  | "dnx451" -> Some(DNX FrameworkVersion.V4_5_1)
                   | "dnxcore50" | "netplatform50" | "netcore50" | "aspnetcore50" | "aspnet50" | "dotnet" -> Some(DNXCore FrameworkVersion.V5_0)
                   | v when v.StartsWith "dotnet" -> Some(DNXCore FrameworkVersion.V5_0)
  -                | "netstandard10" -> Some(DotNetStandard DotNetStandardVersion.V1_0)
  +                | "netstandard" | "netstandard10" -> Some(DotNetStandard DotNetStandardVersion.V1_0)
                   | "netstandard11" -> Some(DotNetStandard DotNetStandardVersion.V1_1)
                   | "netstandard12" -> Some(DotNetStandard DotNetStandardVersion.V1_2)
                   | "netstandard13" -> Some(DotNetStandard DotNetStandardVersion.V1_3)
  
positive.code:     // returns a list of compatible platforms that this platform also supports
      member internal x.RawSupportedPlatforms =
          match x with
          | MonoAndroid -> [ ]
          | MonoTouch -> [ ]
          | MonoMac -> [ ]
          | Native(_) -> [ ]
          | XamariniOS -> [ ]
          | XamarinMac -> [ ]
          | UAP UAPVersion.V10 -> [ Windows WindowsVersion.V8_1; WindowsPhoneApp WindowsPhoneAppVersion.V8_1; DotNetStandard DotNetStandardVersion.V1_4  ]
          | DotNetFramework FrameworkVersion.V1 -> [ ]
          | DotNetFramework FrameworkVersion.V1_1 -> [ DotNetFramework FrameworkVersion.V1 ]
  
negative.code:                 | "netcore10" -> Some (DotNetCore DotNetCoreVersion.V1_0)
                  | "netcore11" -> Some (DotNetCore DotNetCoreVersion.V1_1)
                  | "netcore20" -> Some (DotNetCore DotNetCoreVersion.V2_0)
                  //| v when v.StartsWith "netstandard" -> Some(DotNetStandard DotNetStandardVersion.V1_6)
                  | _ -> None
              result)
  
  