Case insensitive access

[heebtob]

https://github.com/Dynalon/JsonConfig/blob/5127e282a5f982e0d7067cb3e024f9f973c749f4/JsonConfig/ConfigObjects.cs#L32

Would it be possible to access the keys case insensitive, if the initialitazion of the dictionary were like this:

internal Dictionary<string, object> members = new Dictionary<string, object> (StringComparer.InvariantCultureIgnoreCase);