Update author credits

AUTHORS.txt

@@ -0,0 +1,9 @@
+# This is the list of pEpPythonAdapter's significant contributors.
+#
+# This does not necessarily list everyone who has contributed code
+# To see the full list of contributors, see the revision history in
+# source control.
+Volker Birk <vb@pep-project.org>
+Heck <heck@pep.foundation>
+Hartmut Goebel <h.goebel@crazy-compilers.com>
+juga <juga@pep.foundation>

docs/source/conf.py

@@ -18,8 +18,8 @@ sys.path.insert(0, os.path.abspath('../../src'))
 # -- Project information -----------------------------------------------------
 
 project = "pEpPythonAdapter"
-copyright = "2020, Volker Birk, heck, juga"
-author = "Volker Birk, heck, juga"
+copyright = "2020, Volker Birk, heck, Hartmut Goebel, juga"
+author = "Volker Birk, heck, Hartmut Goebel, juga"
 
 import pEp
 # The full version, including alpha/beta/rc tags

setup.cfg

@@ -3,7 +3,7 @@ name = pEp
 url = https://pep.foundation
 download_url =
 ext_package = pEp
-author = Volker Birk
+author = Volker Birk, heck, Hartmut Goebel, juga
 author_email = vb@pep-project.org
 maintainer = heck
 maintainer_email = heck@pep.foundation