Update 1.0.2

I did some more tweaks here and there. Here is a list of changes:

• Added version number to the bottom right of the Main Menu.
• Temporarily Removed the Options Menu until I can fix it.
• Replaced old volume system (which used variables to control volume) with a more efficient channels system (which uses GDevelop's default Audio Channels to control volume).
• Replaced old gun sound, it should now be more pleasant to the ears.
• Added menu item hover sounds.
• Made new music and replaced the old one.
• Added the new music to the main menu.
• Made a new music piece for the Game Over screen.
• Made the word Descent blink to the beat of the music (thought it looked cool).
• Made a few optimizations to the project files (reduced total file size by removing unnecessary images, audio, etc.)

Again I think this is all I did, I hope I didn't miss anything.