[MacPorts] #56072: update py-pyqtgraph and add py36

[MacPorts]

#56072: update py-pyqtgraph and add py36
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  Reporter:  jjstickel     |      Owner:
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:  py36
      Port:  py-pyqtgraph  |
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Changes (by jjstickel):

 * Attachment "py-pyqtgraph_Portfile.diff" added.


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Ticket URL: <https://trac.macports.org/ticket/56072>
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