added subscription model and subscription test
removed .idea from project
added a simple test and mock response for fetching a subscription
added test for creating subscription
added tests for subscription manager
added credit card attributes
added a test for creating a subscription
added bank account attributes class
added coupon manager and tests
updated subscription manager
added payment profile class
added subscription and customer form types
added an abstract class for resource managers
moved test fixtures
updated license and added service definition
added product manager and product manager tests
added type hint for logger
updated composer.json
Merge branch 'develop'