Stable release compatible with Processing 4.0.

It fixes the following issues since the last release of the mode:

• VR library is working again, by bundling the last release of the Google VR packages (this is a temporary workaround until a reimplementation of the VR library is completed using the new Cardboard NDK): #723
• Prevents camera permission in AR from being requested twice: e38f72f

It introduces the following enhancement:

• Implementation of eye() for AR: dabbf80