Refactor createNexSON into existing functions...
Refactor createNexSON into existing functions...

Moved validation/coercion logic into the existing
scrubNexsonForTransport function, and restored the previous
inline creation of simplified nexml-parent object.

OpenTreeOfLife/opentree,OpenTreeOfLife/opentree,OpenTreeOfLife/opentree,OpenTreeOfLife/opentree,OpenTreeOfLife/opentree,OpenTreeOfLife/opentree