Add support for SSL

[thebaron]

This includes another user's SSL work plus some of our own to add support for SSL. It does not set up
keystores and the like; that is left as an exercise for the other user and their excellent java and file {} skills.

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
0 out of 2 committers have signed the CLA.

❌ rfoster
❌ thebaron

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