v1.6.2

Full Changelog

• Handle null from TimelinePanel.getScrollState in RoomView _getScrollState
  #3518
• Fix Community Panel preference not taking effect until some refreshing
  #3517
• Fix backspace without slate focus killing everything
  #3515
• Fix integration manager not updating when set
  #3510
• Various ARIA a11y fixes.
  #3514
• Add a bit of debugging for where MatrixClient stops
  #3511
• Add error boundaries to catch rendering errors
  #3512
• Add an option to hide image previews
  #3492
• Fix: stuck tooltip with composer formatting bar
  #3507
• Fix: don't let composer placeholder show horizontal scrollbar when too
  narrow
  #3506