Merge pull request #429 from hx2A/mousewheel

improve mouse wheel docs

Author: hx2A

py5_docs/Reference/api_en/Py5MouseEvent_get_count.txt

@@ -10,6 +10,8 @@ get_count() -> int
 @@ description
 Get the number of mouse clicks. This will be 1 for a single mouse click and 2 for a double click. The value can be much higher if the user clicks fast enough.
 
+This method also responds to the mouse wheel. It will be 1 when the mouse wheel is rotating down and -1 when the mouse wheel is rotating up.
+
 @@ example
 def setup():
     py5.size(200, 200, py5.P2D)
@@ -22,3 +24,8 @@ def draw():
 
 def mouse_clicked(e):
     py5.println('mouse click count:', e.get_count())
+
+
+def mouse_wheel(e):
+    direction = "down" if e.get_count() == 1 else "up"
+    py5.println(f"mouse wheel rotating {direction}")