py3status: Add icons for redshift & spotify

i3/i3status.conf.j2

@@ -25,6 +25,8 @@ order += "volume_status input"
 order += spotify
 order += "wifi"
 order += "external_script presentation_mode"
+order += "systemd redshift"
+order += "systemd spotify"
 order += online_status
 order += "battery_level all"
 order += "clock"
@@ -42,6 +44,20 @@ battery_level all {
     threshold_full = 95
 }
 
+systemd redshift {
+    unit = "redshift.service"
+    user = true
+    format = "  "
+    on_click 1 = "exec $HOME/.i3/scripts/toggle-app redshift"
+}
+
+systemd spotify {
+    unit = "spotify.service"
+    user = true
+    format = "  "
+    on_click 1 = "exec $HOME/.i3/scripts/toggle-app spotify"
+}
+
 yubikey {
     format = '[   YubiKey[\?if=is_gpg ][\?if=is_u2f ] ]'
 }