Beta release of phyloseq.extended as a proper package

Beta version of the phyloseq.extended package, which can be installed with
remotes::install_github(repo = "mahendra-mariadassou/[email protected]", ref = "dev")

R scripts for FROGS STATS

This release contains stable versions of several graphical methods used in the FROGS STAT module of FROGS (http://frogs.toulouse.inra.fr/).