update UPGRADE.md

.gitattributes

@@ -2,4 +2,5 @@
 /tests export-ignore
 /.gitattributes export-ignore
 /.gitignore export-ignore
-/phpunit.xml
+/phpunit.xml export-ignore
+/phpstan.neon export-ignore

README.md

@@ -6,7 +6,7 @@
 
 ## Requirements
 
-PHP: >= 7.4  
+PHP: >= 8.1  
 Extensions: [Composer](https://getcomposer.org/), [PHP-JSON](https://www.php.net/manual/en/book.json.php)
 
 ## Install

UPDATE.md → UPGRADE.md

@@ -9,6 +9,12 @@ All Classses with started with `\Clicksports\Lexoffice` are now under `\Sysix\Le
 In Version `0.x` all Clients had a separate folder/namespace. Now they will all use the namespace
 `\Sysix\Lexoffice\Clients`
 
+| Old Class | New Class |
+| --- | --- |
+| `new \Clicksports\Lexoffice\Country\Client()` | `new \Sysix\Lexoffice\Clients\Country()` |
+| `new \Clicksports\Lexoffice\Voucher\Client()` | `new \Sysix\Lexoffice\Clients\Voucher()` |
+| ... | ... |
+
 ## Cache removed
 
 For settings a Cache Interface check out [guzzle-cache-middleware](https://github.com/Kevinrob/guzzle-cache-middleware).  
@@ -29,4 +35,8 @@ At the moment, it doesn't look like the endpoint will be added soon. So we will
 ## Exceptions Removed
 
 - `\Sysix\Lexoffice\Exception\CacheException`
-- `\Sysix\Lexoffice\Exception\BadMethodException`
+- `\Sysix\Lexoffice\Exception\BadMethodException`
+
+## Strict Typed
+
+Every Method is has now strict Parameters and strict Return Types. If you extend some classes, you probably need to update them too.

composer.json

@@ -24,7 +24,8 @@
     "phpunit/phpunit": "^10.4"
   },
   "suggest": {
-    "kevinrob/guzzle-cache-middleware": "*"
+    "kevinrob/guzzle-cache-middleware": "*",
+    "spatie/guzzle-rate-limiter-middleware": "*"
   },
   "autoload": {
     "psr-4": {