Add new TLS support and switch to Python 3#2

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BlacklightShining wants to merge 7 commits intotgray:masterfrom

BlacklightShining:master

Commits on Aug 27, 2015

Whitespace fixes
BlacklightShining
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Commits on Aug 28, 2015

Added native TLS support; switched to Python 3; cleaned up code some
BlacklightShining
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Commits on Sep 1, 2015

Changed the shebangs from python to python3
BlacklightShining
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Commits on Oct 1, 2015

Updated manual page to reflect TLS updates
BlacklightShining
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Commits on Feb 4, 2016

Always give our address as 0.0.0.0 in the EHLO
BlacklightShining
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Commits on Oct 3, 2016