This simple, unbranded WordPress plugin adds Call-to-Action (CTA) fields to the editor and allows theme developers to display it using simple functions.
We'll want to release this simple plugin on the WordPress.org repo. The review process is slow, so we've already enabled GitHub Updater so BETA testers can still receive automatic updates.
Created a new branch for this. A CTA button is cool, but having a full CTA section is cooler. This also opens the door for displaying A/B versions of the same CTA for testing and optimization purposes.