I edited my own copy to do it myself but I figured I'd say something so you could consider adding the function.

See, I modified the specs of the dash so that it's less of an instant dodge and more of a sustained sprint; the speed boost is a little less but the dash lasts ten seconds and has a ten minute cooldown, as if you tapped into some reserves and now you need to recover. But I had no way to stop sprinting if I wanted to.

It was easy to do: just move the reset_player_speed function to before the "dash" script event, then add reset_player_speed(event.player_index) to if storage.active_dashes[player_index] then... and voila.

I feel like the result would be unintended for users, since spamming dash can be common in high-intensity combat and interrupting it may result in death. But I could see it providing value as a toggle-able optional setting.