rename initialValueForTextField to formattedTextFieldValue
make private properties and methods to protected
so that subclass has access
create WPYAbstractCardFieldSubclass
define updateText and make setText as methods expected
to be overridden.
remove unnecessary import
define and declare assignText
redefine setText and use assignText or updateText
for internal setter
return masked cvc when value set from client
fix failing tests due to method name change
bump podspec
release 1.0.1