No underscores in class names

classes/Event/Registry.php

@@ -7,11 +7,11 @@
 
 namespace Required\Digest\Event;
 
-use Required\Digest\Message\Comment_Moderation;
-use Required\Digest\Message\Comment_Notification;
-use Required\Digest\Message\Core_Update;
-use Required\Digest\Message\Password_Change_Notification;
-use Required\Digest\Message\User_Notification;
+use Required\Digest\Message\CommentModeration;
+use Required\Digest\Message\CommentNotification;
+use Required\Digest\Message\CoreUpdate;
+use Required\Digest\Message\PasswordChangeNotification;
+use Required\Digest\Message\UserNotification;
 
 /**
  * Event registry.
@@ -89,7 +89,7 @@ public function get_registered_events() {
 	public function register_default_events() {
 		// Register default events.
 		$this->register_event( 'core_update_success', function ( $content, $entries, $user, $event ) {
-			$message = new Core_Update( $entries, $user, $event );
+			$message = new CoreUpdate( $entries, $user, $event );
 
 			if ( '' === $content ) {
 				$content = '<p><b>' . __( 'Core Updates', 'digest' ) . '</b></p>';
@@ -99,7 +99,7 @@ public function register_default_events() {
 		} );
 
 		$this->register_event( 'core_update_failure', function ( $content, $entries, $user, $event ) {
-			$message = new Core_Update( $entries, $user, $event );
+			$message = new CoreUpdate( $entries, $user, $event );
 
 			if ( '' === $content ) {
 				$content = '<p><b>' . __( 'Core Updates', 'digest' ) . '</b></p>';
@@ -109,28 +109,28 @@ public function register_default_events() {
 		} );
 
 		$this->register_event( 'comment_moderation', function ( $content, $entries, $user ) {
-			$message = new Comment_Moderation( $entries, $user );
+			$message = new CommentModeration( $entries, $user );
 
 			return $content . $message->get_message();
 		} );
 
 		$this->register_event( 'comment_notification', function ( $content, $entries, $user ) {
-			$message = new Comment_Notification( $entries, $user );
+			$message = new CommentNotification( $entries, $user );
 
 			return $content . $message->get_message();
 		} );
 
 		if ( in_array( 'new_user_notification', get_option( 'digest_hooks' ), true ) ) {
 			$this->register_event( 'new_user_notification', function ( $content, $entries, $user ) {
-				$message = new User_Notification( $entries, $user );
+				$message = new UserNotification( $entries, $user );
 
 				return $content . $message->get_message();
 			} );
 		}
 
 		if ( in_array( 'password_change_notification', get_option( 'digest_hooks' ), true ) ) {
 			$this->register_event( 'password_change_notification', function ( $content, $entries, $user ) {
-				$message = new Password_Change_Notification( $entries, $user );
+				$message = new PasswordChangeNotification( $entries, $user );
 
 				return $content . $message->get_message();
 			} );

classes/Message/Comment_Moderation.php → classes/Message/CommentModeration.php

@@ -17,7 +17,7 @@
  *
  * @since 2.0.0
  */
-class Comment_Moderation extends Section {
+class CommentModeration extends Section {
 	/**
 	 * Constructor.
 	 *

classes/Message/Comment_Notification.php → classes/Message/CommentNotification.php

@@ -15,7 +15,7 @@
  *
  * Responsible for creating the comment notification section
  */
-class Comment_Notification extends Comment_Moderation {
+class CommentNotification extends CommentModeration {
 	/**
 	 * Constructor.
 	 *

classes/Message/Core_Update.php → classes/Message/CoreUpdate.php

@@ -14,7 +14,7 @@
  *
  * Responsible for creating the core update section
  */
-class Core_Update extends Section {
+class CoreUpdate extends Section {
 	/**
 	 * The comment moderation entries.
 	 *

classes/Message/Password_Change_Notification.php → classes/Message/PasswordChangeNotification.php

@@ -1,6 +1,6 @@
 <?php
 /**
- * Password_Change_Notification class.
+ * PasswordChangeNotification class.
  *
  * @package Digest
  */
@@ -16,7 +16,7 @@
  *
  * @since 2.0.0
  */
-class Password_Change_Notification extends Section {
+class PasswordChangeNotification extends Section {
 	/**
 	 * Constructor.
 	 *

classes/Message/User_Notification.php → classes/Message/UserNotification.php

@@ -1,6 +1,6 @@
 <?php
 /**
- * User_Notification class.
+ * UserNotification class.
  *
  * @package Digest
  */
@@ -16,7 +16,7 @@
  *
  * @since 2.0.0
  */
-class User_Notification extends Section {
+class UserNotification extends Section {
 	/**
 	 * Constructor.
 	 *