+ - added new Discover 65 prefix
+ - check for Switch before Visa as Switch has some BINs in ^4
+ - accept masked numbers in cardtype()
+ - add handling of card network peering arrangements, controllable via
+ $Business::CreditCard::Country
+ - identify Diner's club ^36 cards as MasterCard in US and Canada
+ - identify China Union Pay cards as Discover cards outside China
+ - identify China Union Pay cards