Replace Travis with GitHub Actions, especially for PHP CS Fixer

.github/workflows/tests.yml

@@ -18,7 +18,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
@@ -31,3 +31,20 @@ jobs:
 
       - name: Run PHPUnit
         run: ./vendor/bin/phpunit
+
+  php-cs-fixer:
+    name: PHP-CS-Fixer
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+      - uses: actions/cache@v4
+        with:
+          path: .php-cs-fixer.cache
+          key: ${{ runner.OS }}-${{ github.repository }}-phpcsfixer-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.OS }}-${{ github.repository }}-phpcsfixer-
+
+      - name: PHP-CS-Fixer
+        uses: docker://oskarstark/php-cs-fixer-ga
+        with:
+          args: -v --diff --dry-run

README.md

@@ -1,6 +1,6 @@
 # PHP FinTS/HBCI library
 
-[![Build Status](https://travis-ci.org/nemiah/phpFinTS.svg?branch=master)](https://travis-ci.org/nemiah/phpFinTS)
+[![CI status](https://github.com/nemiah/phpFinTS/actions/workflows/tests.yml/badge.svg)](https://github.com/nemiah/phpFinTS/actions/workflows/tests.yml)
 
 A PHP library implementing the following functions of the FinTS/HBCI protocol:
 

lib/Fhp/Action/SendSEPADirectDebit.php

@@ -11,8 +11,10 @@
 use Fhp\Segment\Common\Kti;
 use Fhp\Segment\DME\HIDMESv1;
 use Fhp\Segment\DME\HIDMESv2;
+use Fhp\Segment\DME\HKDMEv2;
 use Fhp\Segment\DSE\HIDSESv2;
 use Fhp\Segment\DSE\HIDXES;
+use Fhp\Segment\DSE\HKDSEv2;
 use Fhp\Segment\SPA\HISPAS;
 use Fhp\Syntax\Bin;
 use Fhp\UnsupportedException;
@@ -159,7 +161,7 @@ protected function createRequest(BPD $bpd, ?UPD $upd)
                 . implode(', ', $supportedPainNamespaces));
         }
 
-        /** @var mixed $hkdxe */ // TODO Put a new interface type here.
+        /** @var HKDMEv2|HKDSEv2|HIDXES $hkdxe */
         $hkdxe = $hidxes->createRequestSegment();
         $hkdxe->kontoverbindungInternational = Kti::fromAccount($this->account);
         $hkdxe->sepaDescriptor = $this->painNamespace;