Allow event listeners with cancelled events and priorities

[TheDGOfficial]

Is your feature request related to a problem? Please describe.
We can't use event priorities and we can't listen to cancelled events! This available in bukkit api and not in Skript. This a big disadvantage. Of course, we can use skript mirror, but why not implement in vanilla Skript?

Describe the solution you'd like
Allow event listeners with cancelled events and priorities.

Describe alternatives you've considered
Using skript mirror C:

Additional information
N/A