Add Websocket support for Mac platform
Merge branch 'v3' of https://github.com/cocos2d/cocos2d-x into v3_cocostudio

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Merge branch 'v3' of https://github.com/cocos2d/cocos2d-x into v3_cocostudio
1. Fixes #4957 that click test TestChangePlaySection, then it will crash.
2. Modify default value of selectedState to serialize check box data.
Fix UIText miss copy contentSize for clone
Merge pull request #9455 from samuele3hu/v3_cocostudio

Add Websocket support for Mac platform
Merge pull request #9459 from pipu/fix_#9457

Fixes #9457
Merge pull request #9462 from edwardzhou/fix_UIText_clone_missing_contentSize

Fix UIText miss copy contentSize for clone
[ci skip]update version