A few little extra bits of content added. Mainly some cleanup from the last update and added a new level that uses the recoil jump. * Add level 4 hard mode. * Add level 5 normal and hardmode. * Fix normal level progression looping level 4. * There was a few cases of objects being partially or fully behind the background due to the Godot 4.3 tilemap changes. These should all be rectified now. * Cleaned up what goes into the save file and cleaned some redundant code.