Thijs Janzen [aut, cre],
  Fernando Diaz G. [ctb],
  Richèl J.C. Bilderbeek [ctb]

Chris Wallace [aut, cre],
  Oliver Burren [aut]

Claudia P Cabrera [aut, cre],
  Pau Navarro [aut],
  Chris S Haley [aut]

Julien Roche [aut, cre],
  Florence Phocas [aut],
  Mathieu Besson [aut],
  Pierre Patrice [aut],
  Marc Vandeputte [aut],
  François Allal [aut],
  Pierrick Haffray [aut]

Camille Moore [aut, cre],
  Sean Jacobson [aut]

Michael Friendly [aut, cre] (<https://orcid.org/0000-0002-3237-0941>)

Sylvain Gubian, Yang Xiang, Brian Suomela, Julia Hoeng, PMP SA.

Selcuk Korkmaz [aut, cre] (<https://orcid.org/0000-0003-4632-6850>)

Lori Murray [aut, cre], John Wilson [aut, cre]

Gertjan van den Burg [aut, cre],
  Patrick Groenen [ctb]

Umut Altay [cre, aut],
  John Paige [aut],
  Geir-Arne Fuglstad [aut],
  Andrea Riebler [aut]

Juan Pablo Ruiz Nicolini [aut, cre, cph]
    (<https://orcid.org/0000-0002-3138-6343>),
  Patricio Del Boca [aut],
  Juan Gabriel Juara [aut]

Evangelos Evangelou <e.evangelou@maths.bath.ac.uk>, Vivekananda
        Roy <vroy@iastate.edu>

Rafael H. M. Pereira [aut, cre]
    (<https://orcid.org/0000-0003-2125-7465>),
  Caio Nogueira Goncalves [aut],
  Paulo Henrique Fernandes de Araujo [ctb],
  Guilherme Duarte Carvalho [ctb],
  Rodrigo Almeida de Arruda [ctb],
  Igor Nascimento [ctb],
  Barbara Santiago Pedreira da Costa [ctb],
  Welligtton Silva Cavedo [ctb],
  Pedro R. Andrade [ctb],
  Alan da Silva [ctb],
  Carlos Kauê Vieira Braga [ctb],
  Carl Schmertmann [ctb],
  Alessandro Samuel-Rosa [ctb],
  Daniel Ferreira [ctb],
  Marcus Saraiva [ctb],
  Beatriz Milz [ctb] (<https://orcid.org/0000-0002-3064-4486>),
  Ipea - Institue for Applied Economic Research [cph, fnd]

Mitsuru Mukaigawara [cre, aut]
    (<https://orcid.org/0000-0001-6530-2083>),
  Georgia Papadogeorgou [aut] (<https://orcid.org/0000-0002-1982-2245>),
  Jason Lyall [aut] (<https://orcid.org/0000-0001-9117-7503>),
  Kosuke Imai [aut] (<https://orcid.org/0000-0002-2748-1022>)

Jeremy Gelb [aut, cre] (<https://orcid.org/0000-0002-7114-2714>),
  Philippe Apparicio [ctb] (<https://orcid.org/0000-0001-6466-9342>)