more on 1.8.13
maybe the guys at Arduino are ok after all - if you go into preferences and turn off
"check for updates on start", get out of Arduino, shut down windows, reboot
windows then that pesky message seems to go away - i hope forever. maybe
previous versions did not not default that to "on".

but i still wonder if it is better to use 1.8.5 which is very tried and true or to use
1.8.13 because it may have better features? any opinions?