rename global_request_params to auth_params
don't include the api key in unauthenticated requests
move tests.py -> tests/__init__.py
test with exchange_rates.json
move test oauth credentials to json file
move button test json to button.json
use Decimal for CoinbaseAmount
add trailing comma
add missing 'mock' test dependency
add python-dateutil dependency for parsing dates
add 'cents' option to CoinbaseAmount.from_coinbase_dict
use CoinbaseAmount.from_coinbase_dict in transaction/transfer
parse created_at dates for transaction and transfer
enumerate all CoinbaseButton fields, use CoinbaseAmount for price
larger contacts test using contacts.json
create json files for request/send tests
Move users test data to users.json