[MacPorts] #50612: py-powerline update to 2.3

[MacPorts]

#50612: py-powerline update to 2.3
---------------------------+----------------------
  Reporter:  macports@…    |      Owner:  petr@…
      Type:  enhancement   |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:  haspatch
      Port:  py-powerline  |
---------------------------+----------------------

Comment (by sean@…):

 If you want to take over maintainership, then please feel free to!

-- 
Ticket URL: <https://trac.macports.org/ticket/50612#comment:7>
MacPorts <https://www.macports.org/>
Ports system for OS X