[Plugin: Subscribe2] is_blog_user() deprecated

@hallcp,

Thanks for this, that function is only used on multisite installs so I don’t see it. I’ll aim to get a fix for that into the next version. I’ll also post here when I’ve fixed it in the development code if you want to test it.

@hallcp,

I’ve just checked in some changes that should hopefully fix this. Give the development code a try and let me know if it works and those messages clear up.