Update psr-4 autoloading

Author: barryvdh

.gitignore

@@ -1,3 +1,4 @@
+build
 /vendor
 composer.lock
 composer.phar

composer.json

@@ -37,6 +37,10 @@
         "psr-4": { "Omnipay\\Common\\" : "src/Common" },
         "classmap": ["src/Omnipay.php"]
     },
+    "autoload-dev": {
+        "psr-4": { "Omnipay\\Common\\" : "tests/Common" },
+        "classmap": ["tests/OmnipayTest.php"]
+    },
     "require": {
         "php": "^5.6|^7|^8",
         "php-http/client-implementation": "^1",

phpunit.xml.dist

@@ -1,22 +1,28 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<phpunit backupGlobals="false"
+<phpunit bootstrap="vendor/autoload.php"
+         backupGlobals="false"
          backupStaticAttributes="false"
-         bootstrap="vendor/autoload.php"
          colors="true"
+         verbose="true"
          convertErrorsToExceptions="true"
          convertNoticesToExceptions="true"
          convertWarningsToExceptions="true"
          processIsolation="false"
-         stopOnFailure="false"
-         syntaxCheck="false">
+         stopOnFailure="false">
     <testsuites>
         <testsuite name="Omnipay Test Suite">
-            <directory>./tests/</directory>
+            <directory>tests</directory>
         </testsuite>
     </testsuites>
     <filter>
         <whitelist>
-            <directory>./src</directory>
+            <directory suffix=".php">src/</directory>
         </whitelist>
     </filter>
-</phpunit>
+    <logging>
+        <log type="junit" target="build/report.junit.xml"/>
+        <log type="coverage-html" target="build/coverage"/>
+        <log type="coverage-text" target="build/coverage.txt"/>
+        <log type="coverage-clover" target="build/logs/clover.xml"/>
+    </logging>
+</phpunit>