- The `calib_smoother` command now accepts options `nobs` and `heteroskedastic_filter` (see !2110)
- Performance improvement to `solve_algo=12` and `solve_algo=14` (which can significantly accelerate the simulation of purely backward/static/forward models)
- :warning: New `non_zero` option to `resid` command to restrict display to non-zero residuals (preprocessor@9db21a231c5ab8f8aa26680ffecf3abfcf45bfab, 3d7299c1e490a6813de2b2cb450b738b4c7acdf9); the old syntax `resid(1)` is not supported anymore
- The `stack_solve_algo=1` and `stack_solve_algo=6` options were merged. Both are now synonymous, and provide the LBJ algorithm. They work both with and without the `block` and `bytecode` options. Using `stack_solve_algo=1` is now recommended, but `stack_solve_algo=6` is kept for backward compatibility reasons (06f665e231c1a66863612eb75802ff4f0b698c57)