What is the status of this project?

[maiorano84]

I thought it was odd that this project hasn't had any activity for over a year, but it's concerning that this warning is showing up on a Composer install:

Package zendframework/zendpdf is abandoned, you should avoid using it. No replacement was suggested. Package easybook/slugger is abandoned, you should avoid using it. Use javiereguiluz/slugger instead.

Is any maintenance being done on this project?