update of some utility functions
update for alpha version
Change in the behavior or IRFs (WIP)
Update of Dr. Zha's tutorials for Alpha version
Improvement in the reporting of file code
robustified calib. func. to various names for parameters
Simulated data now outputed as separate time series
bug correction in solve_alternatives
Bug correction in msre_solve

Due to the move to version Alpha. the G function was not properly
handled under markov switching with identical regimes, which is solved
by a simple eigenvalue method.
updated function to version Alpha
Updated example to version Alpha (reported by Paul McNelis)
minor updates in the report method of rise