Initial release.
gpq_mu(), gpq_sigma(),
gpq_c(), gpq_J(),
gpq_from_sample().generate_mixture_sample(), dmixnorm(),
pmixnorm(), J_true_mixture().find_mu1_from_J2(),
find_mu1_from_J_mixture()), matching the parameter grid of
Lai et al. (2012) via default_param_grid().run_simulation(),
run_one_row(), run_parallel_grid()) and LaTeX
table generation (generate_normal_tables(),
generate_mixture_tables()).