Coinbasepro

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**Bugfixes**

- Fix `python_requires` in setup.py so this package can be installed by poetry.
- `get_signed_prices` should be an authenticated endpoint.

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**Improvements**

- Add `get_account_transfers` method.
- Add `get_all_transfers` method.
- Add `get_transfer` method.
- Add `get_address_book` method.
- Add `generate_crypto_address` method.
- Add `get_crypto_withdrawal_fee_estimate` method.
- Add `get_fees` method.
- Update `get_products` to reflect that `min_market_funds` now represents minimum order size. Added more type-conversions to numerical fields.
- Add `get_product` method.
- Add `get_signed_prices` method.

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**Bugfixes**

- Fix url in `withdraw_to_coinbase` method.

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**Bugfixes**

- Fix ratelimiting in `get_coinbase_accounts` method.

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**Improvements**

- Add `trade_id` param to `get_trades`. Allows you to get trades starting from an arbitrary trade, instead of only the most recent trade.

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**Bugfixes**

- Fix volume parsing error in `get_fills`.