Bitcart

Properly use event loop
We now support using `asyncio.run` without crashes

Better `__del__` handling

Support python 3.10

Sync generator now supports calling SDK commands in any workflow, mixing threads and asyncio in any way possible: it should no longer hang!

Remove `logger.exception` in favour of `logger.error`

Breaking: better error handling

Now SDK won't error out on invalid event being sent, stop websocket processing on error in handler and so on. It should be reliable now.

All exceptions are instead logged by `bitcart` logger. You no longer need to put try/except in each handler to prevent accidental errors.

`APIManager.load_wallet` now raises `CurrencyUnsupportedError` on non-supported currency passed. It now also handles currencies in a
case-insensitive way.

Applied pre-commit normalisation of all files (whitespaces, newlines, etc), our code base is now fully formatted in an unified way.

Pins `jsonrpcclient` to `<4.0` to prevent breaking the library

Fixes websocket cleanup issues by mimicking `asyncio.run` behaviour, it is now possible to start/stop websocket in shell
multiple times