Simplified some stuff.
Don’t show default credit card fields if iDEAL gateway is chosen.
Changelog update.
Added unimplemented iThemes Exchange add-on
Implemented Exchange gateway settings page
Added getters for the iDEAL options and an unimplemented pay button
Added the Exchage PaymentData class

Also fixed a bug I came across in the EDD PaymentData class
Implemented process_payment method
Implemented status_update method
Exchange cart is now empties on success
Updated readme/txt
Updated Dutch translations
Added ‚sha256’ flag to command for generating private certificate.
Added iThemes Exchange to the extensions list.
Added an is active function.
Add iThemes Exchange to the extensions list.
Removed 2.5.1, fix will be in 2.6.
iThemes Exchange now uses the settings API
Exchange wizard support added, fixes #83
Refactored Exchange to IThemesExchange. Fixes issues #82 and #84