Added PaymentInstructionStateChangeEvent
Explicit events
Merge pull request #125 from ruudk/payment-instruction-events

PaymentInstruction StateChange Event
Allow amount in ChoosePaymentMethodType to a closure
Moved amount calculation to separate function
Merge pull request #126 from ruudk/amount-closure

Amount based on payment method
Added docs for amount closure
Fixed small code style buggie
Merge pull request #127 from ruudk/amount-closure-docs

Added docs for amount closure
Added Adyen, Mollie and MultiSafepay backends
Merge pull request #129 from ruudk/patch-1

Added Adyen, Mollie and MultiSafepay backends
fixes previous commit
Exception should be correctly set
Merge pull request #131 from Remper/master

Exception should be correctly set
small addition for consistency
Typo Fix
Merge pull request #134 from iBiryukov/patch-2

Typo Fix
added KptivePaymentSipsBundle
Merge pull request #135 from youbs/patch-1

added KptivePaymentSipsBundle to the list of payment backends
Add MemeoirsPaymillBundle to the list of payment backends