[MacPorts] #39558: py-decoratortools: update to 1.8

[MacPorts]

#39558: py-decoratortools: update to 1.8
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 Reporter:  jmr@…   |      Owner:  akitada@…
     Type:  update  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:
 Keywords:          |       Port:  py-decoratortools
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 https://pypi.python.org/pypi/DecoratorTools

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Ticket URL: <https://trac.macports.org/ticket/39558>
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