anchor.diff:  /// The Message module contains functions that can help callers compose messages. This
   /// module is especially helpful to open to make calls into Logary's facade small.
   [<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
  -module Message =  
  +module Message =
     open Literals
   
     /// Create a new event log message.
  
positive.code:           let mutable currentColour = foregroundColor
            parts |> List.iter (fun (text, colour) ->
              if currentColour <> colour then
                colourText colours.Value colour |> buffer.Append |> ignore
                currentColour <- colour
              buffer.Append text |> ignore
            )
  
negative.code:     let buffer = StringBuilder()
      let flushStart = new Event<unit>()
      let flushEnd = new Event<unit>()
  
      let flushInner () =
        if inited then
          lock buffer <| fun _ ->
  