Add support for conflict resolution (mutated json objects)

[maratoss]

Hi! Is it a bug? Or it is not possible to apply a patch to changed json? I created a patch on 'a' object, then cleared array of 'a' and tried to apply that patch but got following error:

[Test]
public void test()
{
    var a = new Foo { A = new[] { 1 } };
    var b = new Foo { A = new int[0] };

    var jsonA = JsonConvert.SerializeObject(a);
    var jsonB = JsonConvert.SerializeObject(b);

    var jdp = new JsonDiffPatch();
    var diff = jdp.Diff(jsonA, jsonB);

    /////

    a.A = new int[0];
    jsonA = JsonConvert.SerializeObject(a);
    Console.WriteLine(jdp.Patch(jsonA, diff));
}

private class Foo
{
    public int[] A { get; set; }
}

System.ArgumentOutOfRangeException : Index is equal to or greater than Count. Parameter name: index at Newtonsoft.Json.Linq.JContainer.RemoveItemAt(Int32 index) at JsonDiffPatchDotNet.JsonDiffPatch.ArrayPatch(JArray left, JObject patch) at JsonDiffPatchDotNet.JsonDiffPatch.Patch(JToken left, JToken patch) at JsonDiffPatchDotNet.JsonDiffPatch.ObjectPatch(JObject obj, JObject patch) at JsonDiffPatchDotNet.JsonDiffPatch.Patch(JToken left, JToken patch) at JsonDiffPatchDotNet.JsonDiffPatch.Patch(String left, String patch) at jtest.test() in jtest.cs:line 29

[wbish]

Currently there is no support in the package for conflict handling other than simply throwing as you see in this example.

I've thought about exposing a ConflictResolution property in the objects class and expose some options like: Strict and IgnoreErrors.

I'll keep this open to track the possibility of adding support for this in the future.