Jérémy reviews media controls in the new Theme Customizer and a class that extends WP_Customize_Media_Control to allow the control of cropped images. Source: Using the WordPress Theme Customizer Media Controls Just realize the usefulness of WP_Customize_Cropped_Image_Control. More about it can be found here.

Been a while since I wrote something. Let’s talk about some of the new stuff available in the Customizer. Forget about some of part two First, back in part two, I had a bit about Surfacing th… Useful reference for active_callback. Source: What’s new with the Customizer » Otto on WordPress