dump1090-mutability (1.10.3010.14mu-10)

• Many changes to aircraft.json and the webserver code:
  • Restructure to include the current timestamp, and move
    aircraft data down a level. If you're processing the JSON yourself,
    you will need to adjust your code to handle this.
  • Only include aircraft data when we are sure it's valid.
  • Include the time of the last position report in.
  • If the aircraft is on the ground, report altitude as "ground".
  • Strip trailing query strings from URLs before matching, to allow AJAX
    cache-busting query strings to work.
  • Disable the lighttpd stat cache in the provided config fragment, to
    avoid problems with partial content being served if lighttpd caches an
    old size for the JSON data. This would manifest as "bad content length"
    or JSON parse errors in the webmap.
• Many changes to the webmap javascript:
  • Internal restructuring of how the plane table and map markers are
    maintained. Should be faster and less memory-hungry.
  • Sorting the plane table now sorts missing data high (end of the table for an
    ascending sort).
  • On-the-ground aircraft display an altitude of "ground".
  • Dashed tracks are used when there are lots of missing position reports (more
    than 5 seconds between positions).
  • Green tracks are used for on-the-ground aircraft.
  • Limit history storage requirements by only retaining at most one position
    per 5 seconds.
  • Removal of old aircraft should be much more reliable now, even across
    long pauses (e.g. browser hibernation).
  • Change the clocks to be two UTC clocks: one from local browser time,
    one reflecting the receiver timestamp in the last update.
  • Add "total aircraft" and "total aircraft with positions" counters to the
    infobox when no aircraft is selected.
  • Add a "history positions" counter to the infobox when no aircraft is
    selected; this shows the number of points making up the historical track
    lines.
  • When an aircraft is selected, show both metric and imperial units in the
    infobox (metric setting controls which is shown first).
  • When an aircraft is selected, show the time since last message and time
    since last position message in the infobox.
  • If aircraft.json can't be retrieved, display a warning.
  • If aircraft.json can be retrieved but doesn't appear to be being updated
    (e.g. external webserver, and dump1090 has stopped), display a warning.
  • config.js: Change the default map zoom setting to be more zoomed in.
  • config.js: Add some comments.
  • config.js: Add an option to hide the clocks.
  • Remove extension.js and options.js, as they aren't really maintained.
  • Enable strict mode for script.js / planeObject.js.
• Fix initial map centering to correctly use the receiver location.