Version 3.0-beta - MAJOR UPDATE

### Please test and submit issues.

* Requires PHP 5.3 for API add-on.
* Uses OAuth for API add-on
* Added [Daddy Analytics](http://daddyanalytics.com) integration
* Removes old Web-to-Lead plugin.
* Adds a Settings page to switch between API and Web-to-Lead (no more
having multiple plugins on the plugin page)