Make `STPSource` conform to `STPPaymentMethod`, exposing labels & images#976

Merged

danj-stripe merged 9 commits intomasterfrom joeydong/displayableSource

Aug 3, 2018

+474-44

Commits on Jun 26, 2018

Make STPSource's implementation of STPPaymentMethod public
joeydong-stripe
committed

Commits on Jun 27, 2018

Add suitable STPPaymentMethod protocol implementation in STPSource
joeydong-stripe
committed

Commits on Jul 12, 2018