More cleanup making code cleaner, made Rectangle Boundaries automatically size to camera's view, automatic random boid placement, value tweaking

Assets/Util.cs

@@ -0,0 +1,11 @@
+using UnityEngine;
+
+public class Util {
+    public static Vector2 RotateBy(Vector2 v, float a) {
+        var ca = Mathf.Cos(a);
+        var sa = Mathf.Sin(a);
+        var rx = v.x * ca - v.y * sa;
+
+        return new Vector2((float) rx, (float) (v.x * sa + v.y * ca));
+    }
+}