Merge pull request #10 from 66Ton99/master

Updated PayPal Pro up to API v0.3.0
prepare release
switch master to 0.4-dev.
skip tests if related libs not installed.
add create recurring payments action add api  postfix to api actions.
fix Sync and Status action names.
add get recurring payment profile details action to di.
add recurring payment status action.
Merge pull request #13 from Payum/paypal-express-checkout-recurring-payments

[paypal express checkout] suppor of recurring payments
Update composer.json
[paypal] add recuring payment sync action.
use details aware aggregate
prepare release 0.4
switch master to 0.5
[di][factory] introduce abstract payment factory.
remove commented out method.
remove old code for adding custom actions\apis\extensions.
update deps to 0.5.x
Merge pull request #18 from Payum/abstract-payment-factory

[di][factory] introduce abstract payment factory.
allow configure several storages.