[tor-bugs] #32704 [Core Tor/Tor]: Port changelog tools to python 3

[Tor Bug Tracker & Wiki]

#32704: Port changelog tools to python 3
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     Reporter:  nickm         |      Owner:  (none)
         Type:  defect        |     Status:  new
     Priority:  Medium        |  Milestone:  Tor: 0.4.3.x-final
    Component:  Core Tor/Tor  |    Version:
     Severity:  Normal        |   Keywords:
Actual Points:                |  Parent ID:
       Points:  0             |   Reviewer:
      Sponsor:                |
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 I use sortChanges.py and format_changelog.py to prepare changelogs.  These
 scripts don't use use the python3 list syntax. I should port them.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/32704>
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