waybar: add start/end times to calendar, general improvements

waybar.d/config

@@ -41,11 +41,15 @@
     "format": " <span foreground='#268bd2'>❮</span> "
   },
   "custom/calendar": {
-    "format": "{}",
+    "format": "{icon} {}",
     "tooltip-format": "{}",
     "tooltip": true,
     "return-type": "json",
     "interval": 300,
+    "format-icons": {
+      "event": "<span foreground='#b8bb26'></span> ",
+      "idle": " "
+    },
     "escape": false,
     "exec": "$HOME/.config/sway/bin/waybar_khal.py 2> /dev/null",
     "on-click": "foot -T float khal interactive"
@@ -79,7 +83,7 @@
     "exec-if": "pgrep plexamp"
   },
   "clock": {
-    "format": "<span foreground='#ebdbb2'> </span>{:%H:%M}",
+    "format": "<span foreground='#ebdbb2'> </span>{: %a, %b %d, %H:%M}",
     "on-click": "foot -T float khal interactive"
   },
   "cpu": {