v2.0.2

**Bug Fixes**
- When deserializing a product, price is set to default if the price is missing.
- Small bug fix for TimeInForce enum.
- Fixed Level2 Channel for the WebSocket.
- MarginWindowMeasure is now correctly public.

**New Additions**
- Readers returned from the `websocket.connect` can be passed directly to listen.
- Serialization added to Message Events.
- Made `WebSocketClient::process_message()` publicly accessible.
- `WebSocketClient::fetch_async()` and `WebSocketClient::fetch_sync()` added so that the user can obtain and process messages with closures.
- Implemented From<Product> for ProductUpdate.
- Added Result<(), String> as a return to the fetch_(a)sync functions.

**Optimizations**
- Updated snippets to adhere to best practices (linting).
- Corrected the mutability for WebSocketClient connect() and `connect_endpoint()`.
- Simplify messages to use no custom serde function.
- Removed several unused crates.

**Documentation**
- README updates.
- Updated websocket example.
- Add example of pattern matching on events.

**Breaking Changes**
- Swapped names for `handle_reconnection` and `reconnect`, made `reconnect` public.
- Removed `enable_user` from WebSocketClientBuilder. Toggled by providing authentication details.
- Removed `MessageCallback` and `CandleCallback` traits. They were clunky in implmentation for the user.
- Removed `candle_watcher`, this will be revisited in the future with the new listener system.

v2.0.0, major crate refactor and compatibility updates.

Refactored Crate, updated to be compatible.

Merge pull request #3 from Ohkthx/develop

Version 1.3.0, merged from `develop`