added focused helper to number and expiration (#6)

1.5.1

fix: correctly allow prop override in getInputProps

1.5.0

fix(number): remove maxlength, it doesnt work with spaces

Update readme.md

docs: add creditcards prop explanation

1.4.1

Add expiration unit tests

Update code to allow creditcards as prop

1.4.0

Update to latest creditcards

1.3.4

fix: do not emit type for invalid credit card types

1.3.3