Originally published at: https://pressbooks.org/blog/2018/02/08/pressbooks-4-5-1/
We tagged Pressbooks 4.5.1 on GitHub on January 25th — apologies for the late release notes! This is a minor maintenance release in preparation for Pressbooks 5, and provides some forward-compatibility for those who will not be ready to upgrade to Pressbooks 5 right away. Pressbooks 4.5.1 requires WordPress 4.9.2. [FIX]: Disallow dangerous file types…