feat: add collision handling to rotation

src/main/java/eu/midnightdust/yaytris/Tetris.java

@@ -50,7 +50,7 @@ public class Tetris {
             @Override
             public void run() {
                 if (space.getCurrentTetromino() != null) {
-                    space.getCurrentTetromino().fall(1);
+                    space.getCurrentTetromino().fall();
                     ui.getGamePanel().repaint();
                 }
             }