[Gretl-devel] firstobs() and lastobs() revised

May be relevant for function writers (mostly). In git I've added an second, optional boolean, argument to the functions firstobs() and lastobs(). These functions return, respectively, the indices of the first and last non-missing observations in a series. By default they scan the entire data range regardless of sub-sampling; now if the optional boolean is non-zero the scan is restricted to the current sample. Allin