fix boundingbox
enabled CascadeOpacity and CascadeColor by default
Revert "enabled CascadeOpacity and CascadeColor by default"

This reverts commit 29d492ea7b9fed43660cfa0c7ed5747f3b63e149.
enabled CascadeOpacity and CascadeColor by default
Merge pull request #32 from lite3/refactoring

fix boundingbox and enabled CascadeOpacity and CascadeColor by default