Use more sensible levels of logging methods

src/client.vala

@@ -311,7 +311,7 @@ public int command_line (ref string[] args, bool skip_wait) {
                 stderr.printf ("Could not find monitor: \"%s\"!", args[1]);
                 break;
             default:
-                print ("Unknown command: \"%s\"\n", args[0]);
+                printerr ("Unknown command: \"%s\"\n", args[0]);
                 print_help (args);
                 break;
         }

src/controlCenter/widgets/baseWidget.vala

@@ -47,7 +47,7 @@ namespace SwayNotificationCenter.Widgets {
             Json.Object ? props = null;
             bool result = config.lookup_extended (key, out orig_key, out props);
             if (!result || orig_key == null || props == null) {
-                critical ("%s: Config not found! Using default config...\n", key);
+                warning ("%s: Config not found! Using default config...\n", key);
                 return null;
             }
             return props;

src/functions.vala

@@ -174,7 +174,7 @@ namespace SwayNotificationCenter {
                 if (File.new_for_path (custom_path).query_exists ()) {
                     paths += custom_path;
                 } else {
-                    critical ("Custom config file \"%s\" not found, skipping...", custom_path);
+                    warning ("Custom config file \"%s\" not found, skipping...", custom_path);
                 }
             }
             paths += Path.build_path (Path.DIR_SEPARATOR.to_string (),

src/notification/notification.vala

@@ -509,7 +509,7 @@ namespace SwayNotificationCenter {
                     try {
                         swaync_daemon.set_visibility (false);
                     } catch (Error e) {
-                        print ("Error: %s\n", e.message);
+                        critical ("Error: %s\n", e.message);
                     }
                 }
             }