combine castsequence and IWT and etc together with one key press

[micharl]

Ohh, really? That's pity if we can't send IWT through software. I used to think it's legal if we press one key, then WOW receive one action. It should not be automating because I press the key.

Anyway, we can remove the IWT from scripts and use a separate key. Just need a little modification.
By the way, for caster class, we don't need IWT most of time.