[MacPorts] #60631: scidavis: Update to 2.3.0

[MacPorts]

#60631: scidavis: Update to 2.3.0
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  Reporter:  ryandesign  |      Owner:  NicosPavlov
      Type:  update      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  scidavis    |
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Comment (by NicosPavlov):

 Noted. One issue is that the developer often changes naming conventions,
 so that it is quite possible that the livecheck could miss new versions.

 The update to 2.3.0 will likely take some time, as it switches from
 Qt4/Python2.7 to Qt5/Python3, and apparently requires some tweaks to work.

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Ticket URL: <https://trac.macports.org/ticket/60631#comment:1>
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