Coinbase-advanced-py

Changed
- `iss` on the signed JWT changed from `coinbase-cloud` to `cdp`

Added
- Support for market order buys in base currency with `base_size` in the `market_order_buy` and `preview_market_order_buy` methods
- Support for the following Futures Intraday Leverage API endpoints:
- GetCurrentMarginWindow
- GetIntradayMarginSetting
- SetIntradayMarginSetting
- Support for the following Perpetual Futures Trading API endpoints:
- Get Perpetuals Portfolio Asset Balances
- Opt-In Multi Asset Collateral

Added
- Support for limit Fill-or-Kill (FOK) order types
- Support for trigger bracket orders
- Support for public endpoints in RESTClient and public channels in WSClient that do not require authentication
- `retail_portfolio_id` to `get_accounts` method

Changed
- "Coinbase Cloud" now referred to as "Coinbase Developer Platform (CDP)"

Added
- Support for ClosePosition endpoint

Changed
- Audience no longer included in JWT generation

Added
- `retail_portfolio_id` to all `preview_order` methods

Changed
- Requests now made via request.Sessions() to reduce latency by reusing existing HTTP connection
- Timestamp no longer needed for websocket signing

Added
- Support for limit IOC order types
- Support for payments endpoints

Changed
- get_unix_time() no longer requires authentication
- Log message when subscribing or unsubscribing via WSClient

Fixed
- Unsubscribe_all() no longer sends message if not subscribed to any channel