This release also includes a Modulo component which can be found in the RGB Math category. Modulo lets you calculate the channelwise remainder after channelwise division of source RGB values by another set of RGB values.
The Modulo component can come in especially handy when you're working with the new Pixel X and Pixel Y components: when used together with the If component, Modulo can be used for creating evenly spaced grid lines, as shown here: