Potential memory leaks with event listeners

[Ivan]

Thanks for the great plugin!

It seems to me that in the method for removing event handlers there is not enough removal for the keydown event.
https://github.com/kamranahmedse/driver.js/blob/master/src/events.ts#L118

[Ivan]

And it’s not enough to delete events in this place, especially important for SPA project.

driver.js/src/events.ts

Line 101 in 0889e01

 document.addEventListener("pointerdown", listenerWrapper, useCapture); 

-

driver.js/src/events.ts

Line 113 in 0889e01

 ); 

All these events, each time the method drive() launched, multiply the number of handlers.

[Ivan]

Maybe I'm missing something, but on the screen there are 3 states after calling the method (check with getEventListeners(document))

1. before the plugin works
2. first launch driver
3. re-launch driver(or prev|next click)

[Ivan]

Hello @kamranahmedse !
I wanted to ask if you are still maintaining this wonderful plugin, could you consider my PR on this issue?

I would really like to solve this problem.