Only latin characters are supported in current editor

[Tracy Ma]

Walking into the codebase, it says PolyString is UTF-8 friendly, and i have do some debug on the UITextInput, Chinese characters display well in debug console :

// printf newText value in insertText function

newText char = 中文汉字

newText wchar = 4

but not in editor.

So, is there any plan on internationalization, or where should jump into ?