Update version

package.json

 {
   "name": "echarts",
-  "version": "4.2.0-rc.2",
+  "version": "4.2.0-rc.3",
   "description": "A powerful charting and visualization library for browser",
   "license": "Apache-2.0",
   "keywords": [
@@ -16,7 +16,7 @@
     "prepublish": "node build/build.js --prepublish"
   },
   "dependencies": {
-    "zrender": "4.0.5"
+    "zrender": "4.0.6"
   },
   "devDependencies": {
     "@babel/core": "7.0.0-beta.31",
@@ -35,6 +35,6 @@
     "rollup": "0.50.0",
     "rollup-plugin-node-resolve": "3.0.0",
     "rollup-plugin-uglify": "2.0.1",
-    "zrender": "4.0.5"
+    "zrender": "4.0.6"
   }
 }

src/echarts.js

@@ -54,7 +54,7 @@ var parseClassType = ComponentModel.parseClassType;
 export var version = '4.2.0';
 
 export var dependencies = {
-    zrender: '4.0.5'
+    zrender: '4.0.6'
 };
 
 var TEST_FRAME_REMAIN_TIME = 1;