Patch 1.0.4

Somehow the setTimezone update was not

`setTimezone()`` as well is chainable.
```php
$t = ts('previous monday 23:00', true)
   	->setTimezone('America/Los_Angeles');
```

Author: PandaHugMonster

README.md

@@ -58,7 +58,7 @@ so documentation will come after that in the very nearest time. My apologies.
 
 Minimal PHP version: **8.0**
 
-Current framework version: **1.0.3**
+Current framework version: **1.0.4**
 ```shell
 composer require spaf/simputils "^1"
 ```

src/PHP.php

@@ -106,7 +106,7 @@ public static function frameworkDir() {
 	 */
 	public static function simpUtilsVersion(): Version|string {
 		$class = static::redef(Version::class);
-		return new $class('1.0.3', 'SimpUtils');
+		return new $class('1.0.4', 'SimpUtils');
 	}
 
 	/**

src/models/DateTime.php

@@ -160,12 +160,14 @@ public function setTimezone($timezone): static {
 		//      property - it will be used ONLY for setting, without returning anything.
 		//      This is why return-type signature has no definition!
 		$class_tz = PHP::redef(DateTimeZone::class);
-		if (is_string($timezone)) {
-			$timezone = new $class_tz($timezone);
-		}
+
 		if (empty($timezone)) {
 			$timezone = 'UTC';
 		}
+
+		if (is_string($timezone)) {
+			$timezone = new $class_tz($timezone);
+		}
 		return parent::setTimezone($timezone);
 	}