Support Meteor Beam & Electro Shot

[Zrp200]

The only real possible oversight I can see with this is that this doesn't take into account abilities.

• It doesn't take into account Simple. The correct behavior here would be to have it raise stat stages by 2.
• Contrary is not checked, but I doubt that's an actual concern.
• I am unsure if Sheer Force suppresses the boost.

Are these concerning enough to add checks for them? Otherwise this should be content-complete as a one-line pull request.

[Zrp200]

• I am unsure if Sheer Force suppresses the boost.

Sheer Force should not suppress the Meteor Beam boost, nor should it boost the damage output.

In that case it should be good to go (pending the Simple check being added?)

[ShivaD173]

Can you include Electro Shot in this as well?

[Zrp200]

@ShivaD173 implemented in 9992afc, that was on my list of things I wanted to do, thanks for reminding me.

I also implemented interactions with the Simple and Contrary abilities while I was at it, and added tests to match.

This should be ready to merge in.

[thejetou]

Thanks!