- The perturbation method is now available at an arbitrary approximation order. In other words, the `order` option of `stoch_simul` accepts an arbitrary positive integer (of course, up to some model-specific computational limit) (see #217 for details)
- (Nonlinear) estimation is also now available at an arbitrary approximation
order (#1673)
- Improvements to `identification` command:
- added minimal system identification check of *Komunjer and Ng (2011, Econometrica)*
