Update CHANGELOG.
Bump for release.
PxPay: Trim MerchantReferences longer than 50 characters.
Merge branch 'fix-pxpay-merchant-references'
Remove modifications to $KCODE in cc5 and garanti.
Paymill: Add support for store

Adds the store method, and adds support to purchase and authorize for
using a token directly.
USA ePay Advanced: Fix misspelling of "Aduth"

Closes 639.
Add $KCODE to test files that require it.
Merge pull request #641 from Shopify/remove-kcode

Remove modifications to $KCODE in cc5 and garanti.
Refactor of my last PR to remove warnings for ruby >= 1.9
Merge pull request #643 from Shopify/kcode-fix

Refactor of my last PR to remove warnings for ruby >= 1.9
nil address values should not throw exceptions during truncation.
Merge pull request #644 from Shopify/orbital-nil-address-fix

nil address values should not throw exceptions during truncation.
Bump for release v1.32.1
Netaxept: Revamp to use the "M" service type

The previous implementation used a Netaxept "service type" that they
don't like to give customers access to. This completely revamps the
gateway to use the actually accessible service type.

Closes #581.
Litle: Void authorizations via an auth reversal

This changes the format of the authorization string, but the change
should be fully backwards compatible with any already stored
authorizations.

Closes #642.
Add RBK Money integration

https://rbkmoney.ru/

Closes #647.
Direcpay: Update test url

Closes #651.
PayPal Express gateway: Add billing agreements

It's now possible to create a billing agreement without actually running
a full transaction. Uses the #store API.

Closes #605.
RBK Money: Fix user_fields for 1.8