What has changed & plugin?

you don't need the plugin - left hand side on main page, just click on wishlist to bring up wishlist giveaways.

On a giveaway there are two icons next to the title, a steam icon and an eye. click on the eye to hide stuff you don't want.

You have a whitelist and blacklist in your account page and you can send keys directly on the website now too.
If you need any add-on, there is a list here