By the way, the last changes to the code made it slightly faster for a 1 year data_converter (less than 3%) all while being much safer (not relying on copying pointers verbatim and hoping they remain valid).

A new group of classes has been created, under the meteolaws subdirectory. This contains various general meteorological laws, such as a sun radiation model, standard atmosphere, etc

The first implementation (not tested yet) of a non-linear least square fit algorithm has been implemented in the libfit1D. 

Several documentation issues have been fixed (obsolete code examples, etc) and classes grouped by modules. This should help the user to quickly locate the classes of interest.