Enable php 8.0 support (#124)

Author: ChrisB9

.travis.yml

@@ -3,6 +3,8 @@ language: php
 php:
   - 7.2
   - 7.3
+  - 7.4
+  - nightly
 
 env:
   matrix:

composer.json

@@ -16,7 +16,7 @@
         }
     ],
     "require": {
-        "php": "^7.2",
+        "php": "^7.2 | ^8.0",
         "clue/stdio-react": "^2.0",
         "jolicode/jolinotif": "^2.0",
         "symfony/console": "^4.0|^5.0",
@@ -28,7 +28,7 @@
         "yosymfony/resource-watcher": "<2.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^8.0"
+        "phpunit/phpunit": "^8.0 | ^9.0"
     },
     "autoload": {
         "psr-4": {

phpunit.xml.dist

@@ -1,22 +1,13 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<phpunit bootstrap="vendor/autoload.php"
-         backupGlobals="false"
-         backupStaticAttributes="false"
-         colors="true"
-         verbose="true"
-         convertErrorsToExceptions="true"
-         convertNoticesToExceptions="true"
-         convertWarningsToExceptions="true"
-         processIsolation="false"
-         stopOnFailure="false">
-    <testsuites>
-        <testsuite name="Spatie Test Suite">
-            <directory>tests</directory>
-        </testsuite>
-    </testsuites>
-    <filter>
-        <whitelist>
-            <directory suffix=".php">src/</directory>
-        </whitelist>
-    </filter>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" bootstrap="vendor/autoload.php" backupGlobals="false" backupStaticAttributes="false" colors="true" verbose="true" convertErrorsToExceptions="true" convertNoticesToExceptions="true" convertWarningsToExceptions="true" processIsolation="false" stopOnFailure="false" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd">
+  <coverage>
+    <include>
+      <directory suffix=".php">src/</directory>
+    </include>
+  </coverage>
+  <testsuites>
+    <testsuite name="Spatie Test Suite">
+      <directory>tests</directory>
+    </testsuite>
+  </testsuites>
 </phpunit>