W4MRUtils - Utils List for W4M - Workflow for Metabolomics

Provides a set of utility function to prevent the spread of utilities script in W4M (Workflow4Metabolomics) scripts, and centralize them in a single package. Some are meant to be replaced by real packages in a near future, like the parse_args() function: it is here only to prepare the ground for more global changes in W4M scripts and tools.