Update README.md and AUTHORS.md

Only AUTHORS.md now contains the list of authors, and the README.md is updated to reflect that. Also, the authors list in AUTHORS.md has been updated. Where specific contributions can be attributed for the most part to specific people, they are currently listed.

Author: RedFantom

AUTHORS.md

@@ -25,7 +25,16 @@ This file contains a list of all the authors of widgets in this repository. Plea
   * `AutoHideScrollbar` based on an idea by [Fredrik Lundh](effbot.org/zone/tkinter-autoscrollbar.htm)
   * All color widgets: `askcolor`, `ColorPicker`, `GradientBar` and `ColorSquare`, `LimitVar`, `Spinbox`, `AlphaBar` and supporting functions in `functions.py`.
   * `AutocompleteEntryListbox`
-- [Dogeek](https://github.com/Dogeek)
+- [Simon Bordeyne](https://github.com/Dogeek)
   * `validated_entries` submodule
 - Multiple authors:
   * `ScaleEntry` (RedFantom and Juliette Monsel)
+- [rdbende](https://github.com/rdbende)
+- [Bart Broere](https://github.com/bartbroere)
+  * PR #86
+- [Ryan Baker](https://github.com/ryanbaekr)
+  * PR #96: `check_all` and `uncheck_all` for `CheckboxTreeview`
+- [Fredy Ramirez](https://github.com/formateli)
+  * PR #59: Example runner (`examples/run.py`) 
+- [jnhyperion](https://github.com/jnhyperion)
+  * PR #31

README.md

@@ -10,11 +10,8 @@ A collection of widgets for Tkinter's ttk extensions by various authors.
 
 ## License
     ttkwidgets: A collection of widgets for Tkinter's ttk extensions by various authors 
-    Copyright (C) RedFantom 2017
-    Copyright (C) The Python Team
-    Copyright (C) Mitja Martini 2008
-    Copyright (C) Russell Adams 2011
-    Copyright (C) Juliette Monsel 2017
+    Copyright (c) 2008-2022 The ttkwidgets authors
+    See AUTHORS.md for more details
 
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by