7.6.2beta3

Bruce updated various VPython 7 files, including labextension/src/glocommlab.js. This fixes a bug in setting the depth of a 3D text object, it clamps mousemove event triggers to no more than 60 per second, and it uses more chords per helix turn to improve helix appearance.

Also, he fixed some major bugs in GlowScript VPython in inserting "await" where needed when a function call included arguments such as "a=5".