Update v0.4.0-b.1

Update v0.4.0-b.1

Umm future updates might be take longer for school stuff.

Added:

• Wood item
• Difference music when enemy is near (and it's length is broken (baybe?))
• 2-4 key can now shift 1st 4 items
• Axe
• Particals

Changed:

• Updated the internal game library, this makes it's possible to:

• Use "EBITEN_GRAPHICS_LIBRARY" environment variable to change graphics lib: auto/ directx to use DirectX, opengl to use OpenGL, and if you somehow can use a Mac, you migt can use metal to use Metal.
• Now DLLs is not embeded, so it won't be "virus"

Fixed:

• Performance maybe better? idk