feat: support latest php versions (#45)

Author: DannyvdSluijs

.travis.yml

@@ -1,8 +1,16 @@
 language: php
 
-php:
-  - '7.0'
-  - '7.2'
+matrix:
+  include:
+    - php: 7.1
+    - php: 7.2
+    - php: 7.3
+    - php: 7.4
+    - php: 8.0
+    - php: nightly
+  allow_failures:
+    - php: nightly
+  fast_finish: true
 
 env:
   global:

composer.json

@@ -20,12 +20,12 @@
         }
     },
     "require": {
-        "php": ">=7.0",
+        "php": "^7.1 || ^8.0",
         "netresearch/jsonmapper": "^1.0 || ^2.0",
         "phpdocumentor/reflection-docblock": "^4.3.4 || ^5.0.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^6.0.0"
+        "phpunit/phpunit": "^7.0 || ^8.0"
     },
     "minimum-stability": "dev",
     "prefer-stable": true

tests/DispatcherTest.php

@@ -13,7 +13,7 @@ class DispatcherTest extends TestCase
     private $callsOfNestedTarget;
     private $dispatcher;
 
-    public function setUp()
+    public function setUp(): void
     {
         $this->calls = [];
         $this->callsOfNestedTarget = [];