Limit buy and sell orders.#185

The user would like to be able to set limit buys and stop

For the dca is the best thing i can esperate in this app

This needs to be added as I’ll just go back to KuCoin, limit orders is a really basic feature.

Duplicate of #153

Bitte fügen sie die Limit Oder hinzu, dies sollte als nächstes getan werden.