Update composer.json

Merge pull request #1 from Axent96/patch-1

fix wrong fields for auth request

Merge pull request academe#9 from gallib/master

Add server-to-server password support

Issue academe#7 partial

Check PayPal pending flag and set isPending() appropriaely.

Add test for issue academe#5 upp API

Remove some old Guzzle references.

Omnipay 3.x is now PSR-7 for responses and Symfony for
server requests.

Issue academe#4 default the errorUrl() to the returnUrl()

For card tokenisation, and authorize/purchase.

Issue academe#3 Support isCancelled()

Issue academe#3 back-port for Omnipay 2.x

No longer dev release.