New Magic tool: Color Sep. (aka 3D Glasses)

docs/AUTHORS.txt

@@ -6,7 +6,7 @@ Copyright (c) 2002-2023
 Various contributors (see below, and CHANGES.txt)
 https://tuxpaint.org/
 
-June 17, 2002 - February 7, 2023
+June 17, 2002 - February 21, 2023
 
 * Design and Coding:
 
@@ -137,6 +137,12 @@ June 17, 2002 - February 7, 2023
   (https://freesound.org/people/kentnelson64/sounds/647221/)
   Creative Commons 0 license by "kentnelson64"
 
+  Color Sep. magic tool
+  by Bill Kendrick <bill@newbreedsoftware.com>
+  Color Sep. sound effect: "Sci-Fi Sensors"
+  (https://freesound.org/people/Zarkonnen/sounds/168885/)
+  Creative Commons 0 license by "Zarkonnen"
+
   Mouse accessibility code and keyboard access
   Ankit Choudary <ankit.goaldecided@gmail.com>, as part of GSOC 2010,
   with integration and fixes by Pere Pujal i Carabantes <pere@fornol.no-ip.org>

docs/CHANGES.txt

@@ -7,7 +7,7 @@ Various contributors (see below, and AUTHORS.txt)
 https://tuxpaint.org/
 
 
-2023.February.19 (0.9.29)
+2023.February.21 (0.9.29)
   * Improvements to "Stamp" tool:
     -----------------------------
     * Stamps may now be rotated.
@@ -48,6 +48,12 @@ https://tuxpaint.org/
       (Sound effected licensed as Creative Commons 0 (CC0 1.0)
       by https://freesound.org/people/kentnelson64/)
 
+    * "Color Sep." (color separation) - Separate the colors of the
+      image, e.g. Red vs Cyan, as in anaglyphic "3D glasses" images.
+      Bill Kendrick <bill@newbreedsoftware.com>
+      (Sound effected licensed as Creative Commons 0 (CC0 1.0)
+      by https://freesound.org/people/Zarkonnen/)
+
     * [WIP] "Rivulet"; apply rivulets of water to the canvas
       - needs better icon
       - needs sound effect