Add keyboard shortcuts

assets/editor.js

@@ -41,10 +41,23 @@
         hr:        function () { wrap('\n\n---\n\n', '', ''); },
     };
 
+    var keyMap = {};
     document.querySelectorAll('[data-action]').forEach(function (btn) {
         btn.addEventListener('click', function () {
             var action = actions[btn.dataset.action];
             if (action) action();
         });
+        if (btn.dataset.key) {
+            keyMap[btn.dataset.key] = actions[btn.dataset.action];
+        }
+    });
+
+    document.addEventListener('keydown', function (e) {
+        if (!e.altKey || !e.shiftKey) return;
+        var action = keyMap[e.key];
+        if (action) {
+            e.preventDefault();
+            action();
+        }
     });
 })();