Get position of the block the cursor is on

Hello,

I made this request before, but with the update I figure I can freshen it up:

It would be incredibly useful to be able to get the position of the block we're looking at. To be able to summon mobs, place blocks etc, at the exact position we're aiming at.

Or, if for some reason it's somehow impossible, the angle of the player head in the up/down axis.
We currently have a "Player Rotation" block, but it only gives rotation horizontally.
If we had the same for the head rotation in up/down, we would be able to triangulate the aim position. (Adding some good old math into Minecraft education!)