New release: card.io 5.3.0 for iOS

[Bryant Luk]

Hello from card.io!

We have posted version 5.3.0 of card.io for iOS to github.

From the release notes:

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* Add cardholder name for manual text input. Thanks to Mark Rogers and

  Martin Rybak for the contribution.

  ( https://github.com/card-io/card.io-iOS-source/pull/45 )

* Add option for only numeric input for postal code.

  ( https://github.com/card-io/card.io-iOS-source/pull/51 )

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Please let us know if you discover any issues via GitHub!

Have a happy holiday.