Fixed some Markdown formatting

 - Wrapped the "git remote set-url" command in Markdown code quotes
 - Added a link directly to the Changelog
Merge pull request #94 from jacroe/patch-1

Fixed some Markdown formatting
Added a function, GetLastMessageID, for accessing the last message ID

Added a function, GetLastMessageID, for accessing the last message ID.  It returns whatever message ID was used when the headers were last created, which is also the message ID of the last sent message except in failure cases.  If the client sends multiple messages using the same PHPMailer object, the value returned by GetLastMessageID() will be updated each time.  In issue #57, it was pointed out that a client wanting the message ID could just explicitly set the message ID via $this->MessageID, but that would require the client to understand how to create a good message ID.
Merge pull request #101 from davidsickmiller/patch-1

Added a function, GetLastMessageID, for accessing the last message ID
Manually merge in changes from #101
Merge changes from #101
Tests for messageID
Minor cleanup
Date 5.2.7 release
Increase timeout - fixes #104
Improve debug options
If the autoload stack is not activated then the return value is FALSE.
Merge pull request #109 from btafoya/master

If the autoload stack is not activated then the return value is FALSE.
Update phpmailer.lang-zh_cn.php
Merge pull request #5 from binaryoung/patch-1

Update phpmailer.lang-zh_cn.php
Changelog
Merge remote-tracking branch 'upstream/master'
Allow implementation of additional sending mechanisms by setting Mailer to X and implementing XSend method.
Merge pull request #110 from michield/master

Allow implementation of additional sending mechanisms by setting Mailer ...
Changelog
Alter the way that SMTP host lists are parsed, fixes #112
Fix the way that SMTP host lists are parsed, see #112