Allow Animation to generate its own Renderables.

OpenRA.Mods.RA/Effects/Parachute.cs

@@ -76,7 +76,8 @@ namespace OpenRA.Mods.RA.Effects
 				yield return c.WithPos(pos);
 			}
 
-			yield return new SpriteRenderable(paraAnim.Image, pos + parachuteOffset, 1, rc.First().Palette, 1f);
+			foreach (var r in paraAnim.Render(pos + parachuteOffset, 1, rc.First().Palette, 1f))
+				yield return r;
 		}
 	}
 }