got the last revision of the file authors.txt, as hinted by Stéphane Magnetat.
Index: aseba/authors.txt
===================================================================
--- aseba.orig/authors.txt
+++ aseba/authors.txt
@@ -5,7 +5,7 @@ Copyright (C) 2007--2017 the authors, a
 
 The following people have created significant portions of Aseba:
 
-*	[Stéphane Magnenat](http://stephane.magnenat.net) <stephane at magnenat dot net> [1] [2] [3] [4]
+*	[Stéphane Magnenat](http://stephane.magnenat.net) <stephane at magnenat dot net> [1] 2007–2010, 2015–2016; [2] 2010–2014; [3] 2010, 2016; [4] 2016–2017; [6] 2018-; independant: 2014–2015
 	project leader, original idea, architecture, core programmer all areas
 	contributed to: all
 
@@ -58,11 +58,11 @@ The following people have provided addit
 	bug reporting and fixing
 	contributed to: vpl
 
-*	[Yves Piguet](https://www.calerga.com/people/piguet.html) <yves dot piguet at epfl dot ch> [1]
+*	Yves Piguet <yves dot piguet at epfl dot ch> [1]
 	bug reporting and fixing
 	contributed to: core, studio
 
-*	Corentin Jabot <corentin dot jabot at gmail dot com>
+*	Corentin Jabot <corentin dot jabot at gmail dot com> [3]
 	bug fixing and coding contributions
 	contributed to: core
 
@@ -145,6 +145,8 @@ In addition, the following institutions
 
 [5]: Inria, France (https://www.inria.fr/en/)
 
+[6]: Enlightware LLC (http://enlightware.ch)
+
 # Other contributions
 
 The user manual is fetched from the Wiki at http://aseba.wikidot.com,
