diff --git a/README.md b/README.md
index eb1f52c1..d0b286cf 100644
--- a/README.md
+++ b/README.md
@@ -190,9 +190,9 @@ See [changelog](changelog.md).
 - PHPMailer was originally written in 2001 by Brent R. Matzelle as a [SourceForge project](http://sourceforge.net/projects/phpmailer/).
 - Marcus Bointon (coolbru on SF) and Andy Prevost (codeworxtech) took over the project in 2004.
 - Became an Apache incubator project on Google Code in 2010, managed by Jim Jagielski.
-- Marcus created his fork on [GitHub](https://github.com/Synchro/PHPMailer).
-- Jim and Marcus decide to join forces and use GitHub as the canonical and official repo for PHPMailer.
-- PHPMailer moves to the [PHPMailer organisation](https://github.com/PHPMailer) on GitHub.
+- Marcus created his fork on [GitHub](https://github.com/Synchro/PHPMailer) in 2008.
+- Jim and Marcus decide to join forces and use GitHub as the canonical and official repo for PHPMailer in 2013.
+- PHPMailer moves to the [PHPMailer organisation](https://github.com/PHPMailer) on GitHub in 2013.
 
 ### What's changed since moving from SourceForge?
 - Official successor to the SourceForge and Google Code projects.
diff --git a/changelog.md b/changelog.md
index b3174b57..103e43d8 100644
--- a/changelog.md
+++ b/changelog.md
@@ -56,6 +56,7 @@ This is a major update that breaks backwards compatibility.
 * Include timestamps in HTML-format debug output
 * More reliable folding of message headers
 * Inject your own SMTP implementation via `setSMTPInstance()` instead of having to subclass and override `getSMTPInstance()`.
+* Improve Turkish translations
 
 ## Version 5.2.23 (March 15th 2017)
 * Improve trapping of TLS errors during connection so that they don't cause warnings, and are reported better in debug output
diff --git a/language/phpmailer.lang-zh_cn.php b/language/phpmailer.lang-zh_cn.php
index d85a0b1a..37537802 100644
--- a/language/phpmailer.lang-zh_cn.php
+++ b/language/phpmailer.lang-zh_cn.php
@@ -4,13 +4,14 @@
  * @package PHPMailer
  * @author liqwei <liqwei@liqwei.com>
  * @author young <masxy@foxmail.com>
+ * @author Teddysun <i@teddysun.com>
  */
 
 $PHPMAILER_LANG['authenticate']         = 'SMTP 错误：登录失败。';
 $PHPMAILER_LANG['connect_host']         = 'SMTP 错误：无法连接到 SMTP 主机。';
 $PHPMAILER_LANG['data_not_accepted']    = 'SMTP 错误：数据不被接受。';
 $PHPMAILER_LANG['empty_message']        = '邮件正文为空。';
-$PHPMAILER_LANG['encoding']             = '未知编码: ';
+$PHPMAILER_LANG['encoding']             = '未知编码：';
 $PHPMAILER_LANG['execute']              = '无法执行：';
 $PHPMAILER_LANG['file_access']          = '无法访问文件：';
 $PHPMAILER_LANG['file_open']            = '文件错误：无法打开文件：';
@@ -22,6 +23,6 @@ $PHPMAILER_LANG['provide_address']      = '必须提供至少一个收件人地
 $PHPMAILER_LANG['recipients_failed']    = 'SMTP 错误：收件人地址错误：';
 $PHPMAILER_LANG['signing']              = '登录失败：';
 $PHPMAILER_LANG['smtp_connect_failed']  = 'SMTP服务器连接失败。';
-$PHPMAILER_LANG['smtp_error']           = 'SMTP服务器出错: ';
+$PHPMAILER_LANG['smtp_error']           = 'SMTP服务器出错：';
 $PHPMAILER_LANG['variable_set']         = '无法设置或重置变量：';
-//$PHPMAILER_LANG['extension_missing']    = 'Extension missing: ';
+$PHPMAILER_LANG['extension_missing']    = '丢失模块 Extension：';
diff --git a/src/PHPMailer.php b/src/PHPMailer.php
index 6c85bab7..0f52061e 100644
--- a/src/PHPMailer.php
+++ b/src/PHPMailer.php
@@ -454,9 +454,9 @@ class PHPMailer
      *
      * Parameters:
      *   boolean $result        result of the send action
-     *   string  $to            email address of the recipient
-     *   string  $cc            cc email addresses
-     *   string  $bcc           bcc email addresses
+     *   array   $to            email addresses of the recipients
+     *   array   $cc            cc email addresses
+     *   array   $bcc           bcc email addresses
      *   string  $subject       the subject
      *   string  $body          the email body
      *   string  $from          email address of sender