Sweatbox Builder v7.8.1

Housekeeping release — nothing you do changes, two things get quicker.

• The scenario rail no longer slows down as you save more sessions. It
  used to re-read every saved slot from disk on every keystroke anywhere in
  the app; it now only re-reads a slot when that slot actually changes.
• Slightly smaller download. The old tabbed interface from before
  FLIGHTDECK was still being shipped inside the app even though nothing could
  reach it any more. It is gone from the build (and kept on the classic
  branch of the repository for reference).
• Under the hood: a lookup table replaces a per-aircraft scan when writing the
  .scn, and a duplicate autosave copy that only the old interface read is no
  longer written. The generated file is byte-for-byte identical — the parity
  suite against the original prototype still passes.

Full Changelog: v7.8.0...v7.8.1