Change db.merge() args order or pass it an option object

[bakaburg1]

Hi, I literally fell in love with your framework!!!

I have one suggestion though. when using .merge() is annoying to have to redeclare the 'key' arg to 'id' to set up the event handler to true. I think that it's more common in real cases to set up the event handler than to use a different key for merging than 'id'.

But of course this could be a personal point of view. So one more general solution could be to pass option via an object with defaults {key: 'id', event: 'false'} to be merged with the one passed by the user.
I usually appreciate this solution whenever there are more than 3 args in a function.

What do think about it?