The #Tor relay documentation has shown its age, some of us have been working on writing something new. Currently it lives on trac but will move eventually.
The Tor Relay Guide
Lots of new #Tor releases fixing 5 #vulnerabilities: -Replay-cache ineffective for v2 onion services -Remote DoS attack against directory authorities -An attacker can make Tor ask for a password -Relays can pick themselves in a circuit path -Use-after-free in onion service v2
Since #tor 0.3.2.1-alpha you can display the expiry date of your online signing keys (I overlooked that)
If you need a reason why you should use a @whonix like setup to prevent your real IP from leaking in case of #tor browser bugs and exploits:
Important upcoming fix for #tor exit relays addressing DNS related timeouts.
Workaround via resolv.conf
How far off is the #tornetwork from being a perfect mesh network? Lets find out! #tor https://lists.torproject.org/pipermail/tor-dev/2017-October/012502.html
#tor git master is now 0.3.3.x https://lists.torproject.org/pipermail/tor-dev/2017-October/012497.html