snabbdom-vitualize ignore multiple space when convert to vNode

[Jocs]

Thank you very much for providing such a useful tool, and encountered a small problem during use:
I need to convert the following html to vNode.

<code>    <span class="keyword">return</span></code>

there are 4 space after <code>. but after convertion, there is only one space left.

I think it problem of html-parse-stringify2, So I have also raise a issue there rayd/html-parse-stringify2#18