[TASK] Raise compatibility to TYPO3 9

.travis.yml

@@ -13,7 +13,7 @@ before_install:
   - if php -i | grep -q xdebug; then phpenv config-rm xdebug.ini; fi
 
 install:
-  - composer require typo3/cms="$TYPO3_VERSION"
+  - composer require typo3/minimal="$TYPO3_VERSION"
   - composer install
 
 jobs:
@@ -23,10 +23,16 @@ jobs:
       env: TYPO3_VERSION=^8.7
     - php: 7.2
       env: TYPO3_VERSION=^8.7
+    - php: 7.3
+      env: TYPO3_VERSION=^8.7
+    - php: 7.2
+      env: TYPO3_VERSION=^9.5
+    - php: 7.3
+      env: TYPO3_VERSION=^9.5
 
     - stage: test
-      php: 7.1
+      php: 7.2
-      env: TYPO3_VERSION=^8.7
+      env: TYPO3_VERSION=^9.5
       script:
         - composer lint
         - composer cgl
@@ -34,7 +40,7 @@ jobs:
 
     - stage: deploy
       if: tag IS present
-      php: 7.1
+      php: 7.2
       before_install: skip
       install: skip
       before_script: skip

composer.json

@@ -3,7 +3,7 @@
     "description": "Mjml view using mjml over npm",
     "type": "typo3-cms-extension",
     "homepage": "https://mjml.io",
-    "license": ["GPL-2.0+"],
+    "license": ["GPL-2.0-or-later"],
     "autoload": {
         "psr-4": {
             "Saccas\\Mjml\\": "Classes/"
@@ -15,13 +15,13 @@
         }
     },
     "require": {
-        "php": ">=7.0.0 <=7.2.99",
+        "php": ">=7.1.0 <=7.3.99",
-        "typo3/cms-core": "^8.7.0",
+        "typo3/cms-core": "^8.7.0 || ^9.5.0",
-        "typo3/cms-form": "^8.7.0"
+        "typo3/cms-form": "^8.7.0 || ^9.5.0"
     },
     "require-dev": {
         "squizlabs/php_codesniffer": "^3.2.0",
-        "typo3/cms": "^8.7.0",
+        "typo3/cms-core": "^8.7.0 || ^9.5.0",
         "typo3/testing-framework": "^1.2.2"
     },
     "scripts": {

ext_emconf.php

@@ -17,8 +17,8 @@ $EM_CONF[$_EXTKEY] = [
         ],
     'constraints' => [
         'depends' => [
-            'php' => '7.1.0-7.2.99',
+            'php' => '7.1.0-7.3.99',
-            'typo3' => '8.7.0-8.7.99',
+            'typo3' => '8.7.0-9.5.99',
             'extbase' => '',
         ],
         'conflicts' => [