Fixes a PHP Fatal error:
```
PHP Fatal error: Uncaught Error: Class 'Automattic\WooCommerce\MonorepoTools\Changelogger\DateTime' not found in /var/www/woo/wp-content/plugins/woocommerce/tools/changelogger/Formatter.php:143
```
* Removed Changlogger Autoload
* Changed Jetpack Changelogger Formatter Loading
Rather than using the Composer autoload, we should use the
changelogger's "filename" option to point directly at the file.
This keeps the file out of the autoloads, since it's possible that
plugins or packages may be symlinked and break the relative
path to the plugin.
Paul Sealock
Roy Ho
Claudio Sanches
Christopher Allford