Follows the path established in 2d75c8f by porting the rest of
stripe-ruby's tests over to OpenAPI. There are a few other changes here
where I've removed some tests that are duplicated or don't make much
sense, or reorganized how we test certain things, but this commit is
largely the same migration operation applied in bulk a few dozen test
suites.
As discussed previously in #354 and alluded to in #363, this patch
deprecates the `#refund` helpers on `Charge` and `ApplicationFee` in
favor of the resource-centric approach (i.e. `charge.refunds.create`).
We do this for a few reasons:
1. The new approach is far preferred and uses our modern endpoints. It's
also been the mechanism suggested by the documentation for ages now.
2. The old approach is somewhat risky in that a forgotten "s" can lead
to an accidental refund (i.e. `charge.refund` instead of
`charge.refunds`).
Follows up #354. Fixes#363.
Follows up the patch in #351, which I now believe is wrong. The trouble
is that we were mutating the application fee object, when in reality an
application fee refund is actually a completely new resource (see
[creating a refund][create-refund]). This patch edits the original
attempt to cut a new object and updates tests accordingly.
Once again, related to stripe/stripe-php#208.
[create-refund]: https://stripe.com/docs/api#create_fee_refund
Usage on a top-level collection:
```
Stripe::Customer.list.auto_paging_each do |customer|
puts customer
end
```
Usage on a subcollection:
``` ruby
customer.invoices.auto_paging_each do |invoice|
puts invoice
end
```
We've also renamed `#all` to `#list` to prevent confusion ("all" implies
that all resources are being returned, and in Stripe's paginated API
this was not the case). An alias has been provided for backward API
compatibility.
Fixes#167.
Replaces #211 and #248.
