tree_getattributes: tree_getattributes
In pierrejacob/bayeshscore: Bayesian Model Comparison using the Hyvarinen Score

Get all the attributes (as a list) of an RCpp tree object. The attributes are respectively: number of x-particles (N); upper bound on total size of tree (M); dimension of each x-particle (dimx); 'number of time "insert" has been called (nsteps); vector of ancestor indices (a_star); vector of offspring counts (o_star); vector of particles (x_star); vector of leaf indices (l_star).