Modify button response to drag outside of button event

Author: kmatch98

examples/display_button_simpletest.py

@@ -42,7 +42,7 @@
     style=BUTTON_STYLE,
     fill_color=BUTTON_FILL_COLOR,
     outline_color=BUTTON_OUTLINE_COLOR,
-    label="HELLO WORLD",
+    label=BUTTON_LABEL,
     label_font=terminalio.FONT,
     label_color=BUTTON_LABEL_COLOR,
 )
@@ -56,5 +56,7 @@
     if p:
         if button.contains(p):
             button.selected = True
+        else:
+            button.selected = False # if touch is dragged outside of button
     else:
-        button.selected = False
+        button.selected = False # if touch is released