Rethink converters

[FagnerMartinsBrack]

Inspired by carhartl/jquery-cookie#151 (comment)

Update April 4, 2016

This basically allows the user to intercept the cookie default decoding mechanism, since we can't do both JSON handling (which was done out of the box by #10) and decoding mechanism in the same callback.

More information about this can be seen at #132 (comment)

[carhartl]

Great! Just wondering, what about the following alternative syntax:

Cookies(function () { /* the converter function */ })

Maybe it's nonsense?

[FagnerMartinsBrack]

In this case how the reader of the code would know the function represents a converter?

Ok, it could be written as:

Cookies(function converter() {
  /* ... */ 
});

But then in the unescape case things get cryptic.

// What does unescape do here?
var cookies = Cookies(unescape);

[FagnerMartinsBrack]

Merging this in order to start new pull requests on top of branch 2.0 without code conflicts. Discussion can continue.