bind studio and gui
Merge branch 'master' of git://github.com/cocos2d/cocos2d-x
update change log
update version
update change log
Merge pull request #4189 from minggo/master

[ci skip]Update change log and version
[master] Updating bindings-generator.
hot fix：assetManagerTest cannot compile
Merge pull request #4191 from dabingnn/masterFix

[ci skip]hot fix：assetManagerTest cannot compile
fix  memory leak.
Merge pull request #4188 from Dhilan007/master

bind studio and gui
[master] Adding missing file in TestJavascript.