[MacPorts] #39795: py-obspy: update to 0.8.4

[MacPorts]

#39795: py-obspy: update to 0.8.4
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  Reporter:  Peter.Danecek@…  |      Owner:  macports-tickets@…
      Type:  update           |     Status:  closed
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:
Resolution:  fixed            |   Keywords:  haspatch maintainer
      Port:  py-obspy         |
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Comment (by Peter.Danecek@…):

 Replying to [comment:7 macsforever2000@…]:
 > r108652. It was completely unusual how you created your patchfile and
 thus non-obvious (to me) how to apply it. In the future, I would suggest
 creating it in the same directory as the Portfile.

 Thanks for the commit!
 I actually used git to create the diff, which looked fine and valid. Of
 cause, I can make the diff relative to the ports directory in future, but
 I was not aware of this policy and found no note on this. Wouldn't it be
 useful to document it somehow?

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Ticket URL: <https://trac.macports.org/ticket/39795#comment:8>
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