V4 beta Feb-9-2018 available now

 From:  bemfarmer
8814.85 
Circle Tan and Arc Tan are not working on my work computer, but do work at home.
I'll check the error message more carefully tomorrow. I must have a missing helper script, maybe.
The error involves "GetPointOsnappedOnCurve.js", which is in the scripts #include statement.
- Brian

EDITED: 27 Feb 2018 by BEMFARMER