[A new image cropping algorithm]

1. Replaced both crop margins and crop margins & page num with newer algorithm.
2. Crop max power level increased to 3.0
3. Adds NumPy as a new dependency.

requirements.txt

@@ -8,3 +8,4 @@ packaging>=23.2
 mozjpeg-lossless-optimization>=1.1.2
 natsort[fast]>=8.4.0
 distro>=1.8.0
+numpy>=1.22.4,<2.0.0