OAuth-capable version.

Private photos are now visible thanks to OAuth implementation. However the whole process is much slower because we have to go through our server first in order to fetch data from Flickr. This is for security purposes. Perhaps an insecure version (using client-side JS Oauth) can be provided and users allowed to choose which one they want?
Prettier admin page using WP meta boxes.

Refactored and improved back-end code.
Added sidebar widgets.
Require at least PHP 5.2.

Updated README.