Hi hazek, is it technically and philisophically possible to provide one common parameter "since"? This parameter is widely used among exhanges now.
It is possible to filter trades to return only new trades, trades with tid > since.

If yes, can we expect it in the near future, if not just give a reason.

And one question about Pusher stream api interface. Is it free to use? And if yes will you add order id field into full orderbook respones?

thank you for your efforts