[Ovmsdev] OVMS going comatose

Since updating my in-car OVMS with a build from the master branch after my WolfSSL update I've experienced a couple of instances where connectivity from app was lost. The first time I needed a quick resolution so I just reset OVMS. It happened again during the night while charging, and this time I connected to the console to check conditions before resetting. What I found was that the async console was not responding at all. Since I have OVMS configured to drop into gdb on a crash, I should have seen something. I've turned on logging to file to see if that sheds any light. -- Steve