Add dateutil dependency

Author: mendhak

README.md

@@ -45,7 +45,7 @@ Connect the ribbon from the epaper display to the extension.  To do this you wil
 
 ## Setup dependencies
 
-    sudo apt install git ttf-wqy-zenhei ttf-wqy-microhei python3 python3-pip python-imaging libopenjp2-7-dev libjpeg8-dev inkscape figlet wiringpi
+    sudo apt install git ttf-wqy-zenhei ttf-wqy-microhei python3 python3-pip python-imaging libopenjp2-7-dev libjpeg8-dev inkscape figlet wiringpi python3-dateutil
     sudo pip3 install astral spidev RPi.GPIO Pillow  # Pillow took multiple attempts to install as it's always missing dependencies
     sudo pip3 install --upgrade google-api-python-client google-auth-httplib2 google-auth-oauthlib msal
     sudo sed -i s/#dtparam=spi=on/dtparam=spi=on/ /boot/config.txt  #This enables SPI