Minor code cleanups

Author: castarco

src/Actions/KernelInfoAction.php

@@ -54,7 +54,8 @@ public function call(array $header, array $content)
                     'name' => 'PHP',
                     'version' => phpversion(),
                     'mimetype' => 'text/x-php',
-                    'file_extension' => '.php'
+                    'file_extension' => '.php',
+                    'pygments_lexer' => 'PHP'
                 ]
             ]
         );

src/Handlers/ShellMessagesHandler.php

@@ -10,7 +10,7 @@
 use Litipk\JupyterPHP\Actions\ShutdownAction;
 use Litipk\JupyterPHP\JupyterBroker;
 
-use Litipk\JupyterPHP\SoulVoice;
+use Litipk\JupyterPHP\KernelOutput;
 use Monolog\Logger;
 use Psy\Shell;
 use React\ZMQ\SocketWrapper;
@@ -60,7 +60,7 @@ public function __construct(
             $iopubSocket, 'status', ['execution_state' => 'starting'], []
         );
 
-        $this->shellSoul->setOutput(new SoulVoice($this->executeAction, $this->logger->withName('SoulVoice')));
+        $this->shellSoul->setOutput(new KernelOutput($this->executeAction, $this->logger->withName('KernelOutput')));
     }
 
     /**

src/SoulVoice.php renamed to src/KernelOutput.php

@@ -10,7 +10,7 @@
 use Symfony\Component\Console\Output\OutputInterface;
 
 
-final class SoulVoice implements OutputInterface
+final class KernelOutput implements OutputInterface
 {
     /** @var ExecuteAction */
     private $executeAction;
@@ -19,7 +19,7 @@ final class SoulVoice implements OutputInterface
     private $logger;
 
     /**
-     * SoulVoice constructor.
+     * KernelOutput constructor.
      * @param ExecuteAction $executeAction
      * @param LoggerInterface $logger
      */
@@ -38,7 +38,7 @@ public function __construct(ExecuteAction $executeAction, LoggerInterface $logge
      */
     public function write($messages, $newline = false, $options = 0)
     {
-        $this->logger->debug('Write operation inside SoulVoice');
+        $this->logger->debug('Write operation inside KernelOutput');
 
 
         if (is_string($messages)) {
@@ -127,12 +127,11 @@ public function isDebug()
 
     /**
      * Sets the decorated flag.
-     *
      * @param bool $decorated Whether to decorate the messages
      */
     public function setDecorated($decorated)
     {
-        // TODO: Implement setDecorated() method.
+        // Interface compliance
     }
 
     /**
@@ -147,12 +146,11 @@ public function isDecorated()
 
     /**
      * Sets output formatter.
-     *
      * @param OutputFormatterInterface $formatter
      */
     public function setFormatter(OutputFormatterInterface $formatter)
     {
-        // TODO: Implement setFormatter() method.
+        // Interface compliance
     }
 
     /**