Log Message:
Update to 1.2.0 and fix two bugs:

- Only use index 1 as track boundary.  Previously, the first index was
  taken as the end of the previous track and the last index as the start
  of this track.  All sectors in between were silently dropped.

- Stop output of a track *before* the first sector of the next track.
  Previously, the first sector was output twice, once as the last
  sector of the previous track, once as the first sector of the
  current track.

Patches will be sent upstream shortly.

Take maintainership, ok pooka.