Add setAppVersion support.
https://bugsnag.com/docs/notifiers/php#setappversion
Merge pull request #1 from ROMOPAT/app-version

Add setAppVersion support.
Added Changelog
Update PHPDoc in ClientLoader.php

Wrong namespace
Update PHPDoc in ExceptionListener.php
Update ExceptionListener.php
Update ExceptionListener.php
Update ShutdownListener.php
Update Configuration.php
Update BugsnagExtension.php
Merge pull request #2 from ROMOPAT/patch-1

PHPDoc updates and one fix
Changelog updates for 1.1.1 release
Merge pull request #1 from evolution7/master

pull from master repo