8: Add rolls to items on actor sheets

- Utilized the revisions made to roll syntax to allow for rollable
  buttons on item lists on actor sheets. Rolls are evaluated using
  `@items.ITEM.KEY`, where ITEM is the item name (slugified), and KEY is
  an attribute key for a formula attribute.

module/actor-sheet.js

@@ -34,6 +34,12 @@ export class SimpleActorSheet extends ActorSheet {
 	activateListeners(html) {
     super.activateListeners(html);
 
+    // Handle rollable attributes.
+    html.find('.items .rollable').click(ev => {
+      let r = new Roll($(ev.currentTarget).data('roll'), this.actor.getRollData());
+      r.roll().toMessage();
+    });
+
     // Everything below here is only needed if the sheet is editable
     if (!this.options.editable) return;
 

module/simple.js

@@ -82,4 +82,11 @@ Hooks.once("init", async function() {
     }
   }
 
+  /**
+   * Slugify a string.
+   */
+  Handlebars.registerHelper('slugify', function(value) {
+    return value.slugify({strict: true});
+  });
+
 });