Completed the overloaded subsref method. Access to the time member using a syntax like x(1:3) or x(:).

solution implemented consists of adding one extra observation in the presample
used to compute the prior; as a consequence, the numerical results for all
estimations will be slightly different in future releases (thanks to Marek
Jarociński for spotting this)

Added matlab routine to iterate on the state equation approximated at order 2 (needed for nonlinear filters).

Stéphane Adjemian authored Jul 26, 2011 and Stéphane Adjemian committed Sep 05, 2011

Examples:

dynare --doc <NAME_OF_A_MATLAB_ROUTINE> will display internal documentation of the routine.

dynare --test <NAME_OF_MATLAB_ROUTINE> ... will test the routine(s)

Note that for displaying the internal documentation texinfo must be installed on the system,
because dynare calls makeinfo with --plaintext option.