Nightstand Clock 1.1.0

• A sensor flickering around the night threshold, or a burst of Home Assistant updates, can no longer disable the plugin. Screensaver updates stay within Kiosk Satellite's budget and the latest state is published a moment later.
• Night mode ends only once a numeric entity climbs 10% above the threshold, and keeps its last state while the entity is unavailable.
• Changing the darkness threshold applies at once.
• Night mode always uses a black background.
• The weather high and low come from today's forecast entry, picked by its date, disappear once their day is over, and refresh every 30 minutes.
• The full screen clocks no longer format the date on every frame.
• Tested on Echo Show 5, 1st and 2nd generation.