[tor-project] [New Feature] Stem CollecTor Support

[Damian Johnson]

Hi all, I'm pleased to announce CollecTor support within Stem!

https://stem.torproject.org/api/descriptor/collector.html

This introduces a brand new module that makes gathering Tor's network
topology at prior points in time dead easy. For example...

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import datetime
import stem.descriptor.collector

yesterday = datetime.datetime.utcnow() - datetime.timedelta(days = 1)

# provide yesterday's exits

for desc in stem.descriptor.collector.get_server_descriptors(start = yesterday):
  if desc.exit_policy.is_exiting_allowed():
    print('  %s (%s)' % (desc.nickname, desc.fingerprint))

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As ever, feedback and overly plump tomatoes welcome!