Goal of python version should be to not require internet connection

[bleonar5]

TL;DR

After speaking with the PsychoPy team, it has become clear that the python version of the validator should (1) not be merely a wrapper around the node version and (2) should be designed so as to not require internet and (3) be available over pip.

Detailed View

This will make it much easier for psychopy team to directly integrate validation into their workflow