Clenaup previous PR

Make pixel scrolling the default. Fix memory leak where blank line was
not being deallocated in Screen destructor.

docs/changelog.rst

@@ -153,7 +153,9 @@ Detailed list of changes
 0.45.1 [future]
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-- Wayland: Add momentum scrolling for touchpads
+- Pixel scrolling for the kitty scrollback buffer controlled via :opt:`pixel_scroll` (:pull:`9330`)
+
+- Wayland: Add momentum scrolling in the kitty scrollback buffer for touchpads and touchscreens
 
 - choose-files kitten: Fix JXL image preview not working (:iss:`9323`)
 

docs/overview.rst

@@ -206,16 +206,6 @@ displays an interactive :opt:`scrollbar` along the right edge
 of the window that shows your current position in the scrollback. You can click
 and drag the scrollbar to quickly navigate through the history.
 
-If you use a high‑precision input device such as a touchpad, you can enable
-smooth, per‑pixel scrollback with :opt:`pixel_scroll`. For example, add this to
-your :file:`kitty.conf`::
-
-   pixel_scroll yes
-
-You can further tune the sensitivity with :opt:`touch_scroll_multiplier`. Note
-that this only affects scrolling kitty's own scrollback, not applications
-running inside the terminal that handle their own scrolling.
-
 However, |kitty| has an extra, neat feature. Sometimes you need to explore the scrollback
 buffer in more detail, maybe search for some text or refer to it side-by-side
 while typing in a follow-up command. |kitty| allows you to do this by pressing