[MacPorts] #54257: asciinema : update to 1.4.0

[MacPorts]

#54257: asciinema : update to 1.4.0
------------------------+----------------------
  Reporter:  1-61803    |      Owner:  larryv
      Type:  update     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:  haspatch
      Port:  asciinema  |
------------------------+----------------------
Changes (by mf2k):

 * keywords:   => haspatch
 * cc: larryv@… (removed)
 * status:  new => assigned
 * owner:   => larryv


Comment:

 Also switches to python 3.6.

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Ticket URL: <https://trac.macports.org/ticket/54257#comment:1>
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