astro/opencpn: Update to 5.2.4
- New Plugin Management System
- Support for signalK input data streams
- New Head-Up Navigation Mode
- Docking the Dashboard with dual canvases
- Realtime prediction of AIS target location
Changelog: https://opencpn.org/OpenCPN/about/ver520.html
PR: 252168
Submitted by: Andrea Venturoli <ml@netfence.it> (maintainer)
Approved by: arrowd (mentor)
Differential Revision: https://reviews.freebsd.org/D27798
