Starkbank

Added
- PaymentRequest resource to pass payments through manual approval flow

Added
- ids parameter to transaction.query
- ids parameter to transfer.query
- hidden_fields parameter to Boleto.pdf
- our_number attribute to Boleto
Fixed
- Boleto.due convertion to datetime.datetime instead of misleading datetime.date

Added
- transfer.scheduled parameter to allow Transfer scheduling
- starkbank.transfer.delete to cancel scheduled Transfers
- Transaction query by tags
Fixed
- Event errors on unknown subscriptions

Added
- Travis CI setup
- Boleto PDF layout options
- Transfer query tax_id filter
- Global error language option
Changed
- Test-user credentials to environment variable instead of hard-code
Fixed
- Python 3.4 bugs
- Docstrings

Added
- "receiver_name" & "receiver_tax_id" property to Boleto entities

Fixed
- Docstrings