Bump version to 6.0

README.md

@@ -41,7 +41,7 @@ software availability and distribution.
 PHPMailer is available on [Packagist](https://packagist.org/packages/phpmailer/phpmailer) (using semantic versioning), and installation via composer is the recommended way to install PHPMailer. Just add this line to your `composer.json` file:
 
 ```json
-"phpmailer/phpmailer": "~5.5"
+"phpmailer/phpmailer": "~6.0"
 ```
 
 or run
@@ -59,7 +59,7 @@ Alternatively, if you're not using composer, copy the contents of the PHPMailer
 If you don't speak git or just want a tarball, click the 'zip' button on the right of the project page in GitHub.
 
 ## Legacy versions
-PHPMailer 5.2 (which is compatible with PHP 5.0 - 7.0) is no longer being supported for feature updates, and will only be receiving security updates from now on. You will find the latest version of 5.2 in the [5.2-stable branch](https://github.com/PHPMailer/PHPMailer/tree/5.2-stable), and future versions will be tagged with 5.2.x version numbers, so existing composer configs should remain working. If you're using PHP 5.5 or later, we recommend you make the necessary changes to switch to the 5.5 release.
+PHPMailer 5.2 (which is compatible with PHP 5.0 - 7.0) is no longer being supported for feature updates, and will only be receiving security updates from now on. You will find the latest version of 5.2 in the [5.2-stable branch](https://github.com/PHPMailer/PHPMailer/tree/5.2-stable), and future versions will be tagged with 5.2.x version numbers, so existing composer configs should remain working. If you're using PHP 5.5 or later, we recommend you make the necessary changes to switch to the 6.0 release.
 
 ### Minimal installation
 

VERSION

@@ -1 +1 @@
-5.5.0
+6.0.0

changelog.md

@@ -1,7 +1,7 @@
 # ChangeLog
 
-## Version 5.5
-This is a major update that breaks backwards compatibility. To emphasise that this release requires PHP 5.5, this release is called **5.5**, **not 5.3**!
+## Version 6.0
+This is a major update that breaks backwards compatibility.
 
 * Requires PHP 5.5 or later
 * Uses the `PHPMailer\PHPMailer` namespace

src/PHPMailer.php

@@ -577,7 +577,7 @@ class PHPMailer
     /**
      * The PHPMailer Version number.
      */
-    const VERSION = '5.5.0';
+    const VERSION = '6.0.0';
 
     /**
      * Error severity: message only, continue processing.

src/POP3.php

@@ -36,7 +36,7 @@ class POP3
      * @var string
      * @access public
      */
-    public $Version = '5.5.0';
+    public $Version = '6.0.0';
 
     /**
      * Default POP3 port number.

src/SMTP.php

@@ -32,7 +32,7 @@ class SMTP
      * The PHPMailer SMTP version number.
      * @var string
      */
-    const VERSION = '5.5.0';
+    const VERSION = '6.0.0';
 
     /**
      * SMTP line break constant.