Fixes crash in STPAddCardViewController with some prefilled billing addresses#1004

Merged

csabol-stripe merged 4 commits intomasterfrom csabol/IOS-829_zip_crash

Aug 9, 2018

+243-13

Commits on Aug 3, 2018

Fixes STPAddCardViewController STPAddressViewModelDelegate methods to check for valid table view inserts and removes.
csabol-stripe
committed

Commits on Aug 6, 2018

Consistent accessory update calls
csabol-stripe
committed

Commits on Aug 7, 2018

Adds test to catch zip code switching regressions in STPShippingAddressViewController
csabol-stripe
committed

Commits on Aug 9, 2018

Cleanup and adds sanity checks to new unit tests
csabol-stripe
committed