[MacPorts] #50786: libbiosig @1.7.3: update to 1.7.6

[MacPorts]

#50786: libbiosig @1.7.3: update to 1.7.6
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 Reporter:  christsc@…           |      Owner:  macports-tickets@…
     Type:  update               |     Status:  new
 Priority:  Normal               |  Milestone:
Component:  ports                |    Version:
 Keywords:  haspatch maintainer  |       Port:  libbiosig
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 Fixes several bugs and improves support of CFS files.

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Ticket URL: <https://trac.macports.org/ticket/50786>
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