2015-02-22 v0.9.6 - Supported changes from API

2014-07-07 v0.9.3 - Removed requirement of config.py variables (token, account)
2014-07-07 v0.9.3 - Removed customer_id arg of subscriptions IuguSubscription and SubscriptionCreditsBased classes
2014-07-07 v0.9.3 - Fix custom_variables arg. Changed of keywords parameters to dict.

Pre-release of lib that allows to use API of Iugu.com (webservices). This release support the version 1 (/v1) of API.