Rewrote normalizing algorithm

The mormalizing algorithm was rewritten to be more efficient and hopefully more reliable. See changelog.md for more info.

CSTNet.Tests/CSTHelper.cs

@@ -0,0 +1,16 @@
+using System;
+using System.IO;
+
+namespace CSTNet.Tests
+{
+    static class CSTHelper
+    {
+        public static string CSTFile(string cst, string key)
+        {
+            var path = Path.Combine(AppContext.BaseDirectory, cst);
+            var file = File.ReadAllText(path);
+
+            return CaretSeparatedText.Parse(file, key);
+        }
+    }
+}