anchor.diff:  open System
   open System.Net
   open Newtonsoft.Json
  +open Fake.SemVerHelper
   
   type NugetSearchItemResult =
       { Version:string
  
positive.code:     json.d.results
      |> Seq.sortByDescending (fun i -> i.Published)
      |> Seq.tryHead
      |> fun i -> match i with | Some v -> Some v.Version | None -> None
  
  /// Compute next nuget version number
  let nextVersion (f : NugetVersionArg -> NugetVersionArg) =
  
negative.code:     static member Default() =
          { Server="https://www.nuget.org/api/v2"
            PackageName=""
            Increment=IncMinor
            DefaultVersion="1.0" }
  
  /// Retrieve current nuget version number
  