fix win32 crash while click close button.
fix close crash in linux and mac
LabelAtlas:fixed display incorrect color.
MenuItem:using Label to replace LabelTTF.
add websockets link
Merge pull request #5800 from minggo/lua-template-linux

add websockets link
copy lua files
Merge pull request #5801 from minggo/lua-template-linux

copy lua files
Merge pull request #5798 from Dhilan007/develop_label

closed #4377: LabelAtlas::setColor takes no effect.
Update CHANGELOG [ci skip]
Merge pull request #5799 from samuele3hu/develop_3_fix

fix: Make `Close Menu` of lua_tests invisible for iOS platform
Merge pull request #5793 from koowolf/win32_crash

Crash while clicking close button on desktop platforms
PollEvents before main loop and beautifies codes in CCApplication.cpp/.mm.
update submodule
Merge pull request #5804 from lihex/develop

update submodule
Merge pull request #5803 from dumganhar/develop

PollEvents should invoked before main loop and little improvement in CCApplication.cpp/.mm.
update submodule
Merge pull request #5807 from lihex/develop

update submodule