v1.66.0

-- Sync with DataTree: Fix LoadRunPlotExample1.m example not finding included default data set that it uses to do the demo.

-- Fix checkToolboxes.m once in a while malfunctioning because of unpredictable matlab.ui.Figure/set behavior when toolbox isn't
found and checkToolboxes.m tries to call menu to report on it but runs into this weird error:

    Error setting property 'Position' of class 'Figure':
    Width and height must be greater than or equal to 0

Calling MenuBox instead seems to get around the issue.