[Rseding91] [1.0.0] - Nuke crater not in centre of blasted ground

[GotLag]

This is a minor aesthetic concern, not a major bug.

The crater left after a nuke blast consistently looks like it's too far south compared to the blackened ground around it.
The centre of the crater floor is located at the nuke impact point but the crater has a visual illusion of depth, so the sprite should be moved north between 0.5 to 1 tiles to make it look like it's centred in the blast zone.

I know it's a minor issue but I can't unsee it now

[Rseding91]

Ok, I "fixed" it for the next release (I moved it up half a tile)