Brandur 09c4885d31 Consolidate errors to one file + document them
Right now we have every error class in a separate file which doesn't do
anyone a lot of good, especially given that most of them are just stubs
that derive directly from `StripeError`.

This patch pulls them all into one file and gives them some
documentation. It follows #487 and #488 as minor refactoring work.
2017-01-13 10:28:10 -08:00
..
2016-03-22 17:10:55 -07:00