reimplement marble behavior, making it more consistent in different directions. Triggers no longer activate from blocked marbles, and bounces take the same amount of time to travel through a chain of marbles in all directions

src/marble_engine/board.rs

@@ -118,10 +118,6 @@ impl Board {
 		sum
 	}
 
-	pub fn pos_in_bounds(&self, p: Pos) -> bool {
-		self.in_bounds(p)
-	}
-
 	fn in_bounds(&self, p: Pos) -> bool {
 		p.x >= 0 && p.y >= 0 && p.x < self.width as isize && p.y < self.height as isize
 	}