added Address DTO and read/writes because of findings of the initial Account tests, changed test strat to hit test account on real Recurly API, added unique account code factory, updated .gitignore
added credit card soft validation and tests, adapted some Account tests, restructured extensions to separate files by type
updates to credit card validation algo
refactored test credit card numbers, added property propgataion in billing info for credit card number, adapted remaining account tests
fixed bug in paging, fixed bug in adjustments member validation, refactored Account api tasks to Accounts class (with usages updates), adapted AccountList tests
removed TestClient as it is not in use, refactored Factories to utility methods on BaseTest
adapted Adjustment tests, added State property to Adjustment
adapted BillingInfo tests, identified issue with Account constructor in use in many places - it doesn't require all the required information for account creation, started process of replacing it
mock data generation in BaseTest no longer static, Recurly facing object tests now inherit from BaseTest
refactored static Coupon methods to Coupons, fixed bug where Coupon was not writing MaxRedemptions when posting, adapted Coupon and CouponList tests
adapted Invoice tests, pulled statics into Invoices, added missing Refund functionality
adapted Plan and PlanList tests, refactored statics to Plans, updated how bools are serialized as the service apparently needs them in all lowercase
added functionality for addons for a plan to be retrieved from the plan object
adapted Subscription and SubscriptionList tests, refactored statics to Subscriptions
adapted Transaction and TransactionList tests, adapated InvoiceList tests, removed nunit reference from project, refactored TransactionList enums
updated readme with to dos