KeePassLib bumped to 2.37, compilation ok.

WIP tests

ModernKeePassLib/Utility/MonoWorkaround.PCL.cs

@@ -0,0 +1,10 @@
+namespace ModernKeePassLib.Utility
+{
+    public static class MonoWorkarounds
+    {
+        public static bool IsRequired(int i)
+        {
+            throw new System.NotImplementedException();
+        }
+    }
+}