This package has been written by Yohann Demont and is released under
the GNU General Public License, Version 3 (ie GPL-3). 
YEAR: 2020
COPYRIGHT HOLDERS: Yohann Demont, Gautier Stoll, Guido Kroemer,
                   Jean-Pierre Marolleau, Loïc Garçon,
                   INSERM, UPD, CHU Amiens
IFC: An R Package for Imaging Flow Cytometry
Copyright (C) 2020 Yohann Demont

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hpp_rle_Decomp and hpp_gray_Decomp decompression are port of Bio-Formats readers
and writers authored by Lee Kamentsky under BSD license

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hpp_fast_factor is adapted from Kevin Ushey's code presented in Rcpp gallery.
Rcpp is under GPL >= 2 https://gallery.rcpp.org/articles/fast-factor-generation/

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popsNetwork in popsNetwork.R is using visNetwork package authored by Almende
B.V., Benoit Thieurmel and Titouan Robert under MIT + file LICENSE

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getFileExt is an adapation of file_ext function from tools R package
authored by Kurt Hornik and Friedrich Leisch, The R Core Team under GPL >= 2.0

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Several functions to compute graphs in graphs_utils are derived from Lattice
R package authored by Deepayan Sarkar under GPL >= 2.0

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densCols is an adaptation from File smooth2d.R in grDevices R package
authored Florian Hahne at FHCRC, originally, The R Core Team under GPL >= 2.0

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hpp_HSV2RGB is an adapation from File color.c in grDevices R package
The R Core Team, The R Foundation, under GPL >= 2.0

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trigo_pnt_in_poly is an adaptation of pointinpolygon.c from SDMTools R package
authored by Jeremy VanDerWal, Lorena Falconi, Stephanie Januchowski, Luke Shoo
and Collin Storlie under GPL (>= 2)