Wolfgang Tschacher [aut, cre],
  Deborah Meier [aut],
  Jan Gorecki [ctb]

Alan Genz [aut],
  Frank Bretz [aut],
  Tetsuhisa Miwa [aut],
  Xuefei Mi [aut],
  Friedrich Leisch [ctb],
  Fabian Scheipl [ctb],
  Bjoern Bornkamp [ctb] (ORCID: <https://orcid.org/0000-0002-6294-8185>),
  Martin Maechler [ctb] (ORCID: <https://orcid.org/0000-0002-8685-9910>),
  Torsten Hothorn [aut, cre] (ORCID:
    <https://orcid.org/0000-0001-8301-0471>)

James Thorson [aut, cre] (ORCID:
    <https://orcid.org/0000-0001-7415-1010>)

Sebastian Schutte [aut],
  Karsten Donnay [aut, cre]

Alexander Loboda [aut, cre],
  Nikolay Poperechnyi [aut],
  Eduardo Alvarez-Miranda [aut],
  Markus Sinnl [aut],
  Alexey Sergushichev [aut],
  Paul Hosler Jr. [cph] (Bundled JOpt Simple package),
  www.hamcrest.org [cph] (Bundled hamcrest package),
  Barak Naveh and Contributors [cph] (Bundled JGraphT package),
  The Apache Software Foundation [cph] (Bundled Apache Commons Math
    package)

Hannah De los Santos [aut, cre],
  John Erickson [aut],
  Joe Cheng [ctb],
  Nicholas Thomson [ctb],
  Kristin Bennett [aut]

Zahid Khan [aut],
  Zsolt T. Kosztyan [aut, cre]

Julia Wrobel [aut] (ORCID: <https://orcid.org/0000-0001-6783-1421>),
  Alex Soupir [aut, cre] (ORCID: <https://orcid.org/0000-0003-1251-9179>)

Kyle D. Husmann [aut, cre],
  Timothy R. Brick [aut],
  Ryne Estabrook [aut]

Coleman Harris [aut, cre] (ORCID:
    <https://orcid.org/0000-0002-6325-0694>)

Andrea Brancaccio [aut, cph, cre] (ORCID:
    <https://orcid.org/0000-0001-5919-6990>),
  Umberto Granziol [aut, ctb] (ORCID:
    <https://orcid.org/0000-0002-6286-6569>)

Atchanut Rattanalertnusorn [cre, aut],
  Jiranan Choojai [aut],
  Chutima Philadee [aut],
  Kittipong Klinjan [aut],
  Issaraporn Thiamsorn [aut]

Matěj Man [aut],
  Vojtěch Kalčík [aut, cre],
  Martin Macek [aut],
  Josef Brůna [aut],
  Lucia Hederová [aut],
  Jan Wild [aut],
  Martin Kopecký [aut],
  Institute of Botany of the Czech Academy of Sciences [cph]

Deepika Kulshreshtha, Rupanjali Chaudhuri, Surabhi Seth, S. Ramachandran