[MacPorts] #51994: Add py-filterpy port.

[MacPorts]

#51994: Add py-filterpy port.
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 Reporter:  kuba@…      |      Owner:  macports-tickets@…
     Type:  submission  |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:  2.3.4
 Keywords:              |       Port:  py-filterpy
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 filterpy (https://github.com/rlabbe/filterpy) is a Kalman filtering
 library for python.

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Ticket URL: <https://trac.macports.org/ticket/51994>
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