To get SpriteLibs Version Pre4 0.2, Click "See Inside", Then Click the "Backpack" open button (the arrow pointing up at the bottom right), then drag the "Libs" sprite into the backpack. Now when you want to use Sprite Libs, just drag Sprite Libs from your backpack and drag the functions you want to use into the sprite your using.
NOTE: before you put it in your backpack, press play to make it work better. CREDIT ME: I would like to be credited for my work, so if you use this in your projects, please put: @pythonpro55 - SpriteLibs 0.2 - https://scratch.mit.edu/projects/168884765/ thank you.