Expose list2Dgrids
For compatibility with streamflow, list2DGrids should be exposed. I proposed to add :
bool list2DGrids(const Date& start, const Date& end, std::map<Date, std::set<size_t> > &list){return iohandler.list2DGrids(start,end,list);}
to the public section of IOManager.h, however this commit has been reverted. Currently streamflow do not work without a meteoio patch.
In addition to the use in streamflow, I think the access to this function call can be useful in many meteoIO usage. If my proposition is not ok, please provide another one.