Merge pull request #1196 from pandamicro/develop

[v3.2 rc0 release] Added changelog, release note and authors
Higher res logo for README.md

Changed the logo to the higher resolution one used at https://github.com/cocos2d/cocos2d-x/blob/v3/README.md
runtime's setSearchPaths failed
update prebuilt runtime
Merge pull request #1198 from cocoscodeide/develop

[ci skip]runtime's setSearchPaths failed
Merge pull request #1197 from simondel/develop

Higher res logo for README.md
update win32 prebuilt runtime
Merge pull request #1202 from cocoscodeide/develop

update win32 prebuilt runtime
Update html5 engine
Update cocos2d-x to v3.3