Add optional dependencies
Add optional dependencies

pixel9/nativefier,zucher/nativefier,skewedlines/Nativefier,jiahaog/Nativefier,faceair/nativefier-slack,zucher/nativefier,pixel9/nativefier,gfpacheco/Nativefier,gfpacheco/Nativefier,jiahaog/Nativefier,jiahaog/Nativefier,faceair/nativefier-slack,pixel9/nativefier,gfpacheco/Nativefier,zucher/nativefier,skewedlines/Nativefier,skewedlines/Nativefier