update release note
add regular support in Node::enumerateChildren()
fix compiling warnings
fix container default color issue
Merge pull request #7302 from andyque/fixBinaryOptimization

fix container default color issue
revert release note
revert release note
Merge pull request #7295 from minggo/support-regular-expression

Support regular expression
fix layout background image default color & opacity
Merge pull request #7305 from andyque/fixLayoutReader

fix layout background image default color & opacity