CRTL 1.60

Added

• Update check for the offline version. The downloaded CRTL.html can
  now tell you when a newer release is out. Open Help (bottom-left) ->
  Updates -> Check now: it asks GitHub for the latest release and
  gives you a link to download it.

  Prefer not to think about it? Turn on Check on startup in the same
  place. CRTL then checks at most once a day, and when there's a new version
  an Update to vX.Y.Z item appears in the gear menu, with a small dot
  on the gear. It's off by default and remembered per device: nothing is
  checked unless you ask. The hosted web version is always up to date and
  doesn't need it.

Fixed

• Edit-mode switch in the Paper theme. When switched on, its knob blended
  into the track (completely so in dark mode), so you couldn't tell it was on.

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Download: CRTL.html below is the offline version - one self-contained
file, open it straight from disk. The hosted web version is updated too.