Remove stupid dependencies (picom,dunst), notification in unix way (tiramisu).

Rebinding some keys.

polybar/scripts/polytiramisu.sh

@@ -0,0 +1,25 @@
+#!/bin/sh
+# Show tiramisu notifications in polybar.
+
+# How many seconds notification is displayed:
+display_duration=7.0
+
+# Maximum number of characters:
+char_limit=150
+
+# Stop old tiramisu processes if any:
+pgrep -x tiramisu >/dev/null && killall tiramisu
+
+# Start a new tiramisu process:
+tiramisu -o '#summary #body' |
+    while read -r line; do
+        # Cut notification by character limit:
+        if [ "${#line}" -gt "$char_limit" ]; then
+            line="$(echo "$line" | cut -c1-$((char_limit-1)))…"
+        fi
+
+        # Display notification for the duration time:
+        echo "$line"
+        sleep "$display_duration"
+        echo " "
+    done