v1.2.0: add AccountStatements endpoints and AccountNumber DELETE

• Adds account_statements resource under v2 accounts.
• Adds delete method for account numbers (v2).

v1.1.0: Add support for idempotency key in post/patch requests

• Adds support for idempotency keys on post/patch requests

v1.0.0: Support for Transfers API

• New Client Architecture: Fintoc::V1::Client and Fintoc::V2::Client for managing v1 and v2 API versions separately, all in a wrapper Fintoc::Client to follow the http client API structure.
• Support for most endpoints on the Transfers API (Entities, Accounts, Account numbers, Transfers, Simulation and Account verification)
• CI with linting, testing and full line coverage