TESTING: Autopilot TRACK mode, associated sentences and PGN's

[rgleason]

Goal: OpenCPN support of as many Autopilots as possible. Providing a roadmap of needed items.

Testing: We need volunteers with volunteers with SeatalkNG, Simnet and N2k pilots for testing. If you are willing, please sign up in flyspray by adding a note, stating your system detaills. Thanks.


Please follow John Sherman's (Tugwit) example. Thank you John.
https://opencpn.org/flyspray/index.p...81#comment7436