[MacPorts] #45369: xraylib version bump to 3.1.0

[MacPorts]

#45369: xraylib version bump to 3.1.0
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  Reporter:  Tom.Schoonjans@…  |      Owner:  macports-tickets@…
      Type:  update            |     Status:  new
  Priority:  Normal            |  Milestone:
 Component:  ports             |    Version:  2.3.1
Resolution:                    |   Keywords:  maintainer haspatch
      Port:  xraylib           |
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Comment (by Tom.Schoonjans@…):

 I removed the python 3.1 and 3.2 variants from the Portfile since they
 will be removed soon. I will keep the 2.6 and 3.3 variants around for a
 little while longer since they will be removed only in 2016.

 Thanks,

 Tom

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Ticket URL: <https://trac.macports.org/ticket/45369#comment:2>
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