Ensmallen is written by a team of talented developers listed in the COPYRIGHTS.txt
file:

  ensmallen: a flexible C++ library for efficient function optimization.
  Copyright 2008-2018, Ryan Curtin <ryan@ratml.org>
  Copyright 2008-2012, Dongryeol Lee <dongryel@cc.gatech.edu>
  Copyright 2010-2012, James Cline <james.cline@gatech.edu>
  Copyright 2013-2018, Marcus Edel <marcus.edel@fu-berlin.de>
  Copyright 2013-2018, Sumedh Ghaisas <sumedhghaisas@gmail.com>
  Copyright 2013, Mudit Raj Gupta <mudit.raaj.gupta@gmail.com>
  Copyright 2014, Ryan Birmingham <birm@gatech.edu>
  Copyright 2014, Siddharth Agrawal <siddharth.950@gmail.com>
  Copyright 2014-2015, Stephen Tu <tu.stephenl@gmail.com>
  Copyright 2015&2017, Shangtong Zhang <zhangshangtong.cpp@gmail.com>
  Copyright 2016, Shikhar Bhardwaj <shikharbhardwaj68@gmail.com>
  Copyright 2016, Mike Izbicki <mike@izbicki.me>
  Copyright 2016, Ranjan Mondal <ranjan.rev@gmail.com>
  Copyright 2017, Vivek Pal <vivekpal.dtu@gmail.com>
  Copyright 2017-2018, Sourabh Varshney <sourabhvarshney111@gmail.com>
  Copyright 2017, Chenzhe Diao <williamdiao@gmail.com>
  Copyright 2017, Abhinav Moudgil <abhinavmoudgil95@gmail.com>
  Copyright 2017, Konstantin Sidorov <partobs.mdp@gmail.com>
  Copyright 2017, Kirill Mishchenko <ki.mishchenko@gmail.com>
  Copyright 2017&2019, N Rajiv Vaidyanathan <rajivvaidyanathan4@gmail.com>
  Copyright 2017, Kartik Nighania <kartiknighania@gmail.com>
  Copyright 2017-2018, Manish Kumar <manish887kr@gmail.com>
  Copyright 2017-2018, Haritha Sreedharan Nair <haritha1313@gmail.com>
  Copyright 2018, B Kartheek Reddy <bkartheekreddy@gmail.com>
  Copyright 2018, Moksh Jain <mokshjn00@gmail.com>
  Copyright 2018, Shikhar Jaiswal <jaiswalshikhar87@gmail.com>
  Copyright 2018, Conrad Sanderson
  Copyright 2018, Dan Timson
  Copyright 2019, Rahul Ganesh Prabhu

The RcppEnsmallen package provides an integration of Ensmallen and its dependences
into R. RcppEnsmallen accomplishes this by linking into RcppArmadillo,
establishing plugins, examples, and more. The R implementation was done by James
Joseph Balamuta and Dirk Eddelbuettel with additional contributions by
contributors listed in the ChangeLog.
