Merging with null as default

[AKnopf]

Hey everyone,

I just ran into the problem, that you cannot merge the default value null with anothe value. They key simply will not show up in the result. Here is a quick example in Pseudocode:

var actual = @"{"override":"1png","onlyActual":1}"
var default = @"{"override":null,"onlyDefault":2}"
JsonConfig.Merger.Merge(JsonConfig.Config.ParseJson(actual),JsonConfig.Config.ParseJson(default));
// => "{"onlyActual":1,"onlyDefault:2}"

A quick research in the code lead to line 67 in Merger.cs:

                // skip already copied over keys
                if (!dict2.Keys.Contains(kvp1.Key) || dict2[kvp1.Key] == null)
                    continue;

Could this be the problem?

Cheers! Marvin