JSON Encoding doesn't store JSON

[Mark Anders]

In inspecting the plist files that are created, I was surprised to see that they're not human readable, even though a JSONEncoder is being used. The issue is that you're taking the encoding and storing that directly, rather than converting it to a string.

I think it would be nice to have that at least as an option, to aid in debugging. To do so, you'd change save to look more like:

	public func save(_ object: T) throws {
		let data = try encoder.encode(object)
                if let str = String(data: json, encoding: .utf8) {
		     store.set(str, forKey: key(for: object))
		     increaseCounter()
                } else {
                     // throw appropriate error.
                }
	}

[Omar Albeik]

Hey @mark-anders 👋

Nice Idea, however, I'm not sure if this will have any performance implications
Feel free to open a pull request and I'll make sure to follow up on it