Deprecated import from `pyee`

[Tetraxel]

Hello, It seems that the pyee library has removed the ExecutorEventEmitter two days ago:
https://github.com/jfhbrook/pyee/releases/tag/v12.0.0

Remove deprecated imports:
pyee.BaseEventEmitter
pyee.AsyncIOEventEmitter
pyee.TwistedEventEmitter
pyee.ExecutorEventEmitter
pyee.TrioEventEmitter

Restricting pyee to version <=11 fixes the problem for now, though.

[DamienStaebler]

Interesting. For now, I'll just restrict the version and then see if there's a solution with newer build