[MacPorts] #58349: py27-networkx: update error to version 2.3_0

[MacPorts]

#58349: py27-networkx: update error to version 2.3_0
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  Reporter:  isezen       |      Owner:  stromnov
      Type:  defect       |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.5.4
Resolution:               |   Keywords:
      Port:  py-networkx  |
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Comment (by isezen):

 Replying to [comment:2 mf2k]:
 > In the future, please fill in the Port field and add the port
 maintainer(s) to Cc ({{{port info --maintainers py27-networkx}}}), if any.

 Thanks, I will try to remember next time. I always forget how to get
 maintainer's name and email address.

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Ticket URL: <https://trac.macports.org/ticket/58349#comment:5>
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