close_all_positions should take optional cancel_orders argument

[asxzy]

Is there an existing issue for this?

• I have searched the existing issues

Is your feature request related to a problem? Please describe.

As a user, I'd like the close_all_positions to take an optional boolean cancel_orders argument as defined in the endpoint.

Describe the solution you'd like.

    def close_all_positions(self, cancel_orders=False) -> Positions:
        """Liquidates all open positions at market price"""
        resp = self.delete('/positions', {"cancel_orders":True} if cancel_orders else None)

Describe an alternate solution.

No response

Anything else? (Additional Context)

No response