Snowpack output to file
Since the last version of the dev (I would not be able to say which one exactly) a strange effect has appeared with outputs : If output is directly printed to terminal, it is fine. But if output is printed to a file, some of the output do not appear (e.g. some from prn_msg from CanopyData::initialize in DataClass.cc) and the lines are note anymore printed one by one to the files, the new lines rather appear suddenly as huge chunks after a few minutes. This has been observed both on Linux and MacOS, something is probably wrong somewhere.