build: release 4.5.16

chore:
add unit test
fix:
window onresize may throw an error

Author: wangyi7099

dist/vuescroll.common.js

@@ -1,5 +1,5 @@
 /*
-    * @name: vuescroll 4.5.15
+    * @name: vuescroll 4.5.16
     * @author: (c) 2018-2018 wangyi7099
     * @description: A reactive virtual scrollbar based on vue.js 2.X
     * @license: MIT
@@ -3477,7 +3477,7 @@ var scroll = {
 
     Vue$$1.prototype.$vuescrollConfig = deepMerge(GCF, {});
     scroll.isInstalled = true;
-    scroll.version = '4.5.15';
+    scroll.version = '4.5.16';
   }
 };
 /* istanbul ignore if */

dist/vuescroll.common.min.js

@@ -1,5 +1,5 @@
 /*
-    * @name: vuescroll 4.5.15
+    * @name: vuescroll 4.5.16
     * @author: (c) 2018-2018 wangyi7099
     * @description: A reactive virtual scrollbar based on vue.js 2.X
     * @license: MIT
@@ -3473,7 +3473,7 @@ var scroll = {
 
     Vue$$1.prototype.$vuescrollConfig = deepMerge(GCF, {});
     scroll.isInstalled = true;
-    scroll.version = '4.5.15';
+    scroll.version = '4.5.16';
   }
 };
 /* istanbul ignore if */

dist/vuescroll.esm.js

@@ -1,5 +1,5 @@
 /*
-    * @name: vuescroll 4.5.15
+    * @name: vuescroll 4.5.16
     * @author: (c) 2018-2018 wangyi7099
     * @description: A reactive virtual scrollbar based on vue.js 2.X
     * @license: MIT
@@ -3479,7 +3479,7 @@ var scroll = {
 
     Vue$$1.prototype.$vuescrollConfig = deepMerge(GCF, {});
     scroll.isInstalled = true;
-    scroll.version = '4.5.15';
+    scroll.version = '4.5.16';
   }
 };
 /* istanbul ignore if */

dist/vuescroll.esm.min.js

@@ -31,7 +31,7 @@
     "report-coverage": "codecov",
     "version": "conventional-changelog -p angular -i CHANGELOG.md -s -r 0"
   },
-  "version": "4.5.15",
+  "version": "4.5.16",
   "devDependencies": {
     "babel-core": "^6.26.0",
     "babel-helper-vue-jsx-merge-props": "^2.0.3",