Try to make Cthulhu python 3.9 compatible. Fixed keybinding and notifications bugs.

README.md

@@ -49,7 +49,7 @@ toolkit, OpenOffice/LibreOffice, Gecko, WebKitGtk, and KDE Qt toolkit.
 
 ### Core Requirements
 
-* **Python 3.10+**      - Python platform
+* **Python 3.9+**       - Python platform
 * **pygobject-3.0**      - Python bindings for the GObject library  
 * **gtk+-3.0**           - GTK+ toolkit (minimal usage for AT-SPI integration)
 * **AT-SPI2**            - Assistive Technology Service Provider Interface