feat(v4): deprecate the 8 estimator wrappers + alias diet via module __getattr__; SCM alias (2(d) PR-A, M-070..M-077/M-132..M-135/M-062)

feat(v4): deprecate the 8 estimator wrappers + alias diet via module __getattr__; SCM alias (2(d) PR-A, M-070..M-077/M-132..M-135/M-062) #259