WebDevStudios/Custom-Metaboxes-and-Fields-for-WordPress — pull request #471 by IgorCode (2014-03-02 17:12:35+00:00)
Title: Image preview size for file_list field

Added option to specify image preview size for file_list field. Accepts standard WordPress size i.e. either a string keyword (preregistered image size) or a 2-item array representing width and height in pixels, e.g. array(100, 100).