fix memory leak cocos studiov2.0 engine v3.3
fix memory leak cocos studiov2.0 engine v3.3 #8998
fix memory leak for zipUtils
modiry     document->Parse((char*)pByte);  to     document->Parse((const char*)pByte);
Merge branch 'v3' of https://github.com/aeonmine/cocos2d-x into v3

Conflicts:
	cocos/editor-support/cocostudio/ActionTimeline/CCActionTimelineCache.cpp
	cocos/editor-support/cocostudio/ActionTimeline/CSLoader.cpp
;; -> ;
Update CCFileUtils-linux.cpp
fixes types in readme

thanks @kidproquo
Merge pull request #9024 from ricardoquesada/readme_fixes

fixes types in readme
Update CHANGELOG

fix typo
Merge pull request #9027 from winipcfg/patch-1

Update CHANGELOG
runtime demo is ugly when screen orientation is portrait
Merge pull request #9032 from cocoscodeide/v3

runtime demo is ugly when screen orientation is portrait
fixes some compiler warnings

don't call deprecated functions
Merge pull request #9040 from ricardoquesada/warnings_fixes

fixes some compiler warnings
How to contribute to cocos2d-x
Merge pull request #9042 from ricardoquesada/contribute

How to contribute to cocos2d-x
Update CONTRIBUTE.md
Adds releasing rules
Merge pull request #9047 from ricardoquesada/releasing

Adds releasing rules
fix ui crash bug caused by DrawNode