Merge remote-tracking branch 'shopify/master' into mcpe

* shopify/master: (470 commits)
  Epay: Deprecate credit method
  Deprecate credit method in net registry gateway
  Authorize.Net: Better match eCheck.Net reqs
  MiGS: Use capture test credentials in remote test
  MiGS: Update remote test card expiration dates
  USA ePay Advanced: Fix Check support
  Float Rails to the latest version
  Distinguish invalid/empty issue_number errors
  Orbital: Bug fixes and added fields
  Barclays ePDQ: Handle incorrectly encoded response
  SagePay gateway: Per-transaction 3DS selection
  Dwolla: Security fix and enable guest checkout
  Bluepay: Add Check support; general cleanup
  Bogus gateway: Add authorization to response
  Merchant e-Solutions: Add ref# and recurring
  Authorize.Net: Add Check as a payment method
  Add Transnational gateway
  Fix GettingStarted.md reference links in README
  DataCash: Fix remote tests
  Fix duplicate test methods
  ...
Merge branch 'mcpe' of github.com:noodl/active_merchant into mcpe

* 'mcpe' of github.com:noodl/active_merchant:
  Use brand rather than type for CCs