removeEventListener should take `js.Function1[_ <: Event, _]`

[mpartel]

EventTarget#addEventListener takes a js.Function1[T, _] for any T <: Event but EventTarget#removeEventListener only accepts a js.Function1[Event, _]. It should probably also take a js.Function1[T, _].

[mseddon]

This has already been addressed in 3c689a7

It should be publicly available already, in version 0.8.2.

[mpartel]

Ah, sorry, I thought my deps were more up to date than they actually were.

[mseddon]

No problem :)