WIP "Comic Dots" magic tool

For https://sourceforge.net/p/tuxpaint/feature-requests/257/

docs/CHANGES.txt

@@ -7,6 +7,16 @@ Various contributors (see below, and AUTHORS.txt)
 https://tuxpaint.org/
 
 2024.September.16 (0.9.34)
+  * New Magic Tools:
+    ----------------
+    * WIP "Comic Dots", draws repeating dots (using a multiply blend)
+      to simulate the "Ben Day process" of coloring/shading.
+      Bill Kendrick <bill@newbreedsoftware.com>
+      - TODO needs icons
+      - TODO needs sound effects
+      - TODO needs documentation
+      Closes https://sourceforge.net/p/tuxpaint/feature-requests/257/
+
   * Improvements to Fill tool:
     --------------------------
     * New "Eraser" flood fill mode, to expose the background