Brandur f723080220 Refactor serialize_params under StripeObject
This pull does two major things:

1. Refactors `serialize_params` to be more concise and readable while
   still complying to our existing test suite. Unfortunately over time
   this method has become a ball of mud that's very difficult to reason
   about, as recently evidenced by #384.
2. Moves `serialize_params` from class method to instance method (while
   still keeping for old class method for backwards compatibility). This
   is to give it a more sane interface.
2016-03-04 19:04:29 -08:00
..
2016-01-26 14:32:16 -08:00
2016-02-06 16:55:29 +02:00