ZF-8218: remove unnecessary requirements from Zend_Service_Twitter constructor
There are cases where Zend_Service_Twitter can be used without authentication, but the constructor requires $username and $password to always be passed. For example, checking if a given username exists or not:
$tw = new Zend_Service_Twitter(null); $exists = $tw->user->show($who)->id() !== null;
Since the first parameter is required, one can't simply do this:
$tw = new Zend_Service_Twitter();
I'd like to propose that both constructor parameters should be optional, in order to more cleanly support these anonymous uses.