Revert "Final Update"

This reverts commit 97aace4c81b4bb66645649adda188e4a5b1e51dd.
Final Updates

Final Update
Add one more enemy plane.
Fixed sounds.
Fixed game window resize.
Add clouds.
Add Main boss.
Add HP bar to the boss.
Boss Fire rockets at you.
Highs score fixed.
Add play-again option.