A package for translating a CMIP Data Request to XIOS file_defs

Introduction                     : see doc/dr2xml_principles.pdf 
Pre-requisites                   : see prologue of dr2xml.py 
How to use                       : see Notebooks DR2xml.ipynb and create_ping_files.ipynb
                                   (or their python and html version in docs/)
Product examples                 : see output_sample/
How to add your own Data Request : see doc/listof_home_vars.help 
                                   (and, in french, doc/dr2xml_home_variables.pdf)

References :
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XIOS                             : https://forge.ipsl.jussieu.fr/ioserver/
CMIP6 Data Request               : http://w3id.org/cmip6dr