Upgrade rollup

dist/shuffle.js

@@ -1,8 +1,8 @@
 (function (global, factory) {
   typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
   typeof define === 'function' && define.amd ? define(factory) :
-  (global.Shuffle = factory());
-}(this, (function () { 'use strict';
+  (global = global || self, global.Shuffle = factory());
+}(this, function () { 'use strict';
 
   function _classCallCheck(instance, Constructor) {
     if (!(instance instanceof Constructor)) {
@@ -2178,5 +2178,5 @@
 
   return Shuffle;
 
-})));
+}));
 //# sourceMappingURL=shuffle.js.map

docs/dist/shuffle.js

@@ -1,8 +1,8 @@
 (function (global, factory) {
   typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
   typeof define === 'function' && define.amd ? define(factory) :
-  (global.Shuffle = factory());
-}(this, (function () { 'use strict';
+  (global = global || self, global.Shuffle = factory());
+}(this, function () { 'use strict';
 
   function _classCallCheck(instance, Constructor) {
     if (!(instance instanceof Constructor)) {
@@ -2178,5 +2178,5 @@
 
   return Shuffle;
 
-})));
+}));
 //# sourceMappingURL=shuffle.js.map

package.json

@@ -65,11 +65,11 @@
     "gulp-sass": "^4.0.0",
     "gulp-shell": "^0.6.5",
     "mocha": "^5.0.0",
-    "rollup": "^0.67.3",
+    "rollup": "^1.1.0",
     "rollup-plugin-babel": "^4.0.3",
     "rollup-plugin-commonjs": "^9.1.0",
     "rollup-plugin-node-resolve": "^4.0.0",
-    "rollup-plugin-terser": "^3.0.0",
+    "rollup-plugin-terser": "^4.0.2",
     "sinon": "^7.1.1"
   }
 }