Update CHANGES and bump version

CHANGES

@@ -1,3 +1,9 @@
+4.0.7 2017-12-09
+- Fix QR code and ss:// protocol import issue
+- Add an option to show password
+- User rules have higher priority in PAC file
+- Bug fixes and improvements
+
 4.0.6 2017-09-09
 - SIP002 support
 - SIP003 support

shadowsocks-csharp/Controller/Service/UpdateChecker.cs

@@ -24,7 +24,7 @@ namespace Shadowsocks.Controller
         public string LatestVersionLocalName;
         public event EventHandler CheckUpdateCompleted;
 
-        public const string Version = "4.0.6";
+        public const string Version = "4.0.7";
 
         private class CheckUpdateTimer : System.Timers.Timer
         {