Changes since tag v1.06.01

commit 02fc48015b01d573ff3da7846f0cbd5c10408b33
Author: Moorea Tv <moorea@ymail.com>
Date:   Thu Aug 1 20:20:52 2019 -0700

    have a common parent for all 3 measurement/coord frames
    
    so we can switch them to worldframe on alt-z and back, together
    
    ie: the measurement box is always visible not just the current cursor

