Log Message:
Update to 4.8.2. Changes since 4.8.0:
info popup on track rollover
drop a mark on boat position on space press if SpaceDropMark is set to 1
  in the config file.
GHSS and US Pilotcharts added to charts downloader
Config option "Course-Up Update Period" has been renamed to
  "Chart Rotation Averaging Time"
help handle for dragging waypoints in touchscreen mode
The shortcut key "D" now it works for both ENC vector charts and \ 
raster charts
  in addition to cm93.
If course (COG) and speed (SOG) is not available through the normal NMEA
  interface to your gps, these values can be calculated by OpenCPN by using
  the position data
A course predictor is now shown on screen even when the actual target,
  or the end point, is not visible on screen.
In Options-> User Interface-> Interface Options there are now three sliders
  for user control of different features
A new Own ship range ring colour picker is now included
You can now get rid of the barbed arrow heads in the grib display
When GRIB plugin is active and tide- and/or current-buttons are pressed,
  then tide/current calculations are shown at the "GRIB time".
New settings for old and slow computers in
  Options-> Display-> Advanced-> Graphics

For details see
https://opencpn.org/OpenCPN/about/ver482.html