Fix table tool: streams should not have leading '+' on each line

src/HexManiac.Core/Models/Runs/TableStreamRun.cs

@@ -94,7 +94,15 @@ namespace HavenSoft.HexManiac.Core.Models.Runs {
       public string SerializeRun() {
          var builder = new StringBuilder();
          AppendTo(model, builder, Start, ElementLength * ElementCount);
-         return builder.ToString();
+         var lines = builder.ToString().Split(Environment.NewLine);
+
+         // AppendTo is used in copy/paste scenarios, and includes the required '+' to work in that case.
+         // strip the '+', as it's not needed for stream serialization, which uses newlines instead.
+         return string.Join(Environment.NewLine, lines.Select(line => {
+            if (line.Length == 0) return line;
+            if (line[0] != ArrayRun.ExtendArray) return line;
+            return line.Substring(1);
+         }).ToArray());
       }
 
       public IStreamRun DeserializeRun(string content, ModelDelta token) {

src/HexManiac.Tests/StreamTests.cs

@@ -66,9 +66,9 @@ namespace HavenSoft.HexManiac.Tests {
          ViewPort.Edit("00 01 02 03 FF ^bob CC @00 ^table[value.]!FF ");
          ViewPort.Tools.SelectedIndex = ViewPort.Tools.IndexOf(ViewPort.Tools.StringTool);
          Assert.Equal(@"0
-+1
-+2
-+3", ViewPort.Tools.StringTool.Content);
+1
+2
+3", ViewPort.Tools.StringTool.Content);
 
          ViewPort.Tools.StringTool.Content = @"0
 1

src/HexManiac.Tests/TableTests.cs

@@ -257,10 +257,10 @@ namespace HavenSoft.HexManiac.Tests {
 
          // precondition: the format is as expected
          Assert.Equal(@"255
-+255
-+255
-+255
-+255", segment.Content);
+255
+255
+255
+255", segment.Content);
 
          // Act: change the content in a way that would change the length of a more dynamic stream.
          segment.Content = "12";