CMSE                    Circular Mean Squared Error
build_network           Build Adjacency Matrix
evaluate_network        Evaluate Estimated Network
fit_circular_model      Fit Circular Graphical Model
log_likelihood          Log-Likelihood for Circular Model
mod_twopi               Wrap Angles to (-pi, pi)
model_fit_cmse          Fit Circular Model Using CMSE
plot_network            Plot Estimated Network
residual_fnc            Compute Residuals
