support multiple top-level elements

[crisdosaygo]

https://github.com/dosyago/bepis/blob/21058c2932fc7ed0450f47f33662d81db5707b8f/index.js#L182

voice typing

tree to Dom supports single top-level element and even though it doesn't discard any top level siblings it incorporates them as descendants of the first top-level element

in order to better create a more diverse and versatile set of dome from this we need to support multiple top-level elements one way to do that would be to use a document fragment at the top level another way would be to use some sort of them special top-level array structure to hold the multiple top-level roots