Add enhanced output of elementary differentials and weights #96
Description
For example, it would be nice to get
f''(f, f)\sum_{i} b_i c_i^2
from t = rootedtree([1, 2, 2]).
{{ message }}
For example, it would be nice to get
f''(f, f)\sum_{i} b_i c_i^2from t = rootedtree([1, 2, 2]).