User would like to have automatic binning and monotonicity constraints available for them in GLM
x is linear
transform it to x_1, x_2, x_3:
if x<0.2 -> x_1 = 0
if 0.2 < x < 0.4 -> x_2 = 0.4
if x > 0.4 -> x_3 = 0.8
^this is monotonic, but the bins could be monotonic (e.g. x_2 = -0.1).
See support ticket for more info