tweet 6.x-3.0

The biggest change in this release is that it relies upon the Shorten URLs module to shorten the URLs that appear in Tweets. This is not a dependency, but if it is not installed, your users will see the full, long URLs in their tweets. Shorten is much more versatile at shortening URLs than Tweet was; plus, I wrote it, so you know it will be well-supported and stable. ;)

If you install Shorten before you update Tweet, your settings will be transferred when you run update.php.

Other changes:
API change - removed $q parameter of tweet_to_twitter()
Improved in-code documentation formatting
#462586 Improved rules to get current URL for sites with multi-language support
Corrected path to image which broke on some sites as a result of #462586
Update README.txt to reflect latest changes.