Unstable Packages, Move Dependencies, Replace xfce4-notifyd with dunst

- Mark notify-send-py as unstable
- Mark linux_notification_center as unstable
- Move polybar-dwm-module runtime dependencies to dwm-flexipatch
- Replace xfce4-notifyd with dunst as dwm-flexipatch dependency

dev-python/notify-send-py/notify-send-py-1.2.7.ebuild

@@ -14,7 +14,7 @@ S="${WORKDIR}"/notify-send.py-${PV}
 
 LICENSE="MIT"
 SLOT="0"
-KEYWORDS="amd64"
+KEYWORDS="~amd64"
 
 DEPEND="
 	dev-python/setuptools[${PYTHON_USEDEP}]