Update changelog

doc/changelog.asciidoc

@@ -95,13 +95,15 @@ Changed
   Qt 5.15.0 included in qutebrowser v1.14.0, such as:
     * Correct handling of AltGr on Windows
     * Fix for `content.cookies.accept` not working properly
-    * Proper support for screen sharing
+    * Fixes for screen sharing (some websites are still broken until an upcoming Qt
+      5.15.3)
     * Support for FIDO U2F / WebAuth
     * Fix for the unwanted creation of directories such as `databases-incognito` in
       the home directory
     * Proper autocompletion in the devtools console
     * Proper signalisation of a tab's audible status (`[A]`)
     * Hardware accelerated graphics on macOS
+- (TODO) Windows and macOS releases now ship Python 3.9 rather than 3.7.
 
 Fixed
 ~~~~~
@@ -115,6 +117,8 @@ Fixed
   accidentally declared that it wasn't supported. This is now fixed.
 - The `dmenu_qutebrowser` and `qutedmenu` userscripts now correctly read the
   qutebrowser sqlite history which has been in use since v1.0.0.
+- With Python 3.8+ and vertical tabs, a deprecation warning for an implicit int
+  conversion was shown. This is now fixed.
 - (TODO) Fix for various functionality breaking in private windows with v1.14.0,
   after the last private window is closed. This includes:
     * Ad blocking