Generates and evaluates D, I, A, Alias, E, T, G, and custom optimal designs. Supports generation and evaluation of mixture and split/split-split/N-split plot designs. Includes parametric and Monte Carlo power evaluation functions. Provides a framework to evaluate power using functions provided in other packages or written by the user.
get_optimality was looking only for attributes "D" and "A", not "D-efficiency" and "A-efficiency". Mofidied gen_design to use those attribute names.
Also modified eval_design to compute Alias optimality in the same way as used in gen_design.