Change copyright notice so yearly updates are not needed

Just learned that we don't need to do this every year: https://hynek.me/til/copyright-years

Followed Go's example of only stating the starting year: https://github.com/golang/go/blob/master/LICENSE

Btw any ideas why the dates vary? Some start in 2004, others 2013, 2015... shouldn't be the same year for all locations?

Author: nicoddemus

LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2004-2021 Holger Krekel and others
+Copyright (c) 2004 Holger Krekel and others
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of
 this software and associated documentation files (the "Software"), to deal in

README.rst

@@ -160,7 +160,7 @@ Tidelift will coordinate the fix and disclosure.
 License
 -------
 
-Copyright Holger Krekel and others, 2004-2021.
+Copyright Holger Krekel and others, 2004.
 
 Distributed under the terms of the `MIT`_ license, pytest is free and open source software.
 

doc/en/conf.py

@@ -98,7 +98,7 @@
 
 # General information about the project.
 project = "pytest"
-copyright = "2015–2021, holger krekel and pytest-dev team"
+copyright = "2015, holger krekel and pytest-dev team"
 
 
 # The language for content autogenerated by Sphinx. Refer to documentation
@@ -329,7 +329,7 @@
 epub_title = "pytest"
 epub_author = "holger krekel at merlinux eu"
 epub_publisher = "holger krekel at merlinux eu"
-epub_copyright = "2013-2021, holger krekel et alii"
+epub_copyright = "2013, holger krekel et alii"
 
 # The language of the text. It defaults to the language option
 # or en if the language is not set.

doc/en/index.rst

@@ -141,7 +141,7 @@ Tidelift will coordinate the fix and disclosure.
 License
 -------
 
-Copyright Holger Krekel and others, 2004-2021.
+Copyright Holger Krekel and others, 2004.
 
 Distributed under the terms of the `MIT`_ license, pytest is free and open source software.
 

doc/en/license.rst

@@ -9,7 +9,7 @@ Distributed under the terms of the `MIT`_ license, pytest is free and open sourc
 
     The MIT License (MIT)
 
-    Copyright (c) 2004-2021 Holger Krekel and others
+    Copyright (c) 2004 Holger Krekel and others
 
     Permission is hereby granted, free of charge, to any person obtaining a copy of
     this software and associated documentation files (the "Software"), to deal in