Version 1.40　Update

Version 1.40

Added Content:
- Added VERY HARD difficulty.
This option will be available upon completing the game, along with VERY HARD+ and VERY HARD++ difficulties upon additional completions.
- Added the ability to transform into Zipper for Noah.
This option will be available upon completing the game.
- Added the option to turn airship facilities on and off.
- Adjusted in-game text.