put this mouseButton entry in the correct file

Author: benfry

core/todo.txt

@@ -1,6 +1,8 @@
 1277 (4.0b2)
 X fix apparent problem in PShape with QUADRATIC_VERTEX (wrong vertex index)
-
+X mouseButton not reporting correctly in 4.0b1 (Windows and Linux)
+X   https://github.com/processing/processing4/issues/281
+X   https://github.com/processing/processing4/issues/283
 
 contribs
 X Remove two redundant variable assignments in PShader

todo.txt

@@ -8,9 +8,6 @@ X deal with getFontMetrics() deprecation warning in EditorToolbar
 X Exported Application broken in 4.0 beta 1 on macOS when using P2D or P3D
 X   https://github.com/processing/processing4/issues/249
 X   new issue: https://github.com/processing/processing4/issues/284
-X mouseButton not reporting correctly in 4.0b1 (Windows and Linux)
-X   https://github.com/processing/processing4/issues/281
-X   https://github.com/processing/processing4/issues/283
 X add -Dpython.console.encoding=UTF-8 to launcher
 X   https://github.com/jdf/Processing.py-Bugs/issues/322
 o key shortcuts broken on Katherine's laptop
@@ -23,7 +20,6 @@ X   https://github.com/processing/processing4/issues/280 (duplicate)
 X Movie Maker broken with spaces in path (converted to %20)
 X   https://github.com/processing/processing4/issues/268
 
-
 contribs
 X fix minor typos in the PWM code for the IO library
 X   https://github.com/processing/processing4/pull/266