anchor.diff:  let configuration = "Release"
   let solution = "./src/Akka.sln"
   let versionSuffix = 
  -    match (getBuildParamOrDefault "nugetprerelease" "") with
  +    match (getBuildParam "nugetprerelease") with
       | "dev" -> "beta"
       | _ -> ""
   
  
positive.code: let outputBinariesNet45 = outputBinaries @@ "net45"
  let outputBinariesNetStandard = outputBinaries @@ "netstandard1.6"
  
  Target "Clean" (fun _ ->
      ActivateFinalTarget "KillCreatedProcesses"
  
  
negative.code:                 AdditionalArgs = additionalArgs })
  )
  
  Target "Build" (fun _ ->   
      if getBuildParam "nugetprerelease" = "dev" then
          XmlPokeInnerText "./src/common.props" "//Project/PropertyGroup/VersionPrefix" version        
  
      DotNetCli.Build
          (fun p -> 
              { p with
  