v0.10.0

Added

• led blink on|off makes the status LED blink or burn steadily (short command 18). The status
  block does not carry it, so status cannot show it. led 0-3 is unchanged (#76).
• exposure manual --time <1-2500> --gain <1-64> sets the shutter time and gain together with
  the switch to manual exposure, both range-checked first. The camera uses the shutter step at or
  below the time given. Capability exposure_values (#77).
• audio volume <0-100> sets the microphone volume (0x8102); status has audio_volume
  (query 0x80c2). Capability audio_volume (#86).
• wake zoom <1.0-4.0> sets the zoom after waking up and wake mode <mode> the tracking mode the
  camera starts in; both read back in status (wake_up_zoom_percent, default_work_mode).
  wake alone still wakes the camera. Capabilities wake_zoom, wake_mode (#87).
• focus af continuous|single|manual sets the camera's own autofocus mode (0x3442) and
  focus point <x> <y> focuses once on a point (0x3582); status has focus with the mode,
  the manual position and the focus window (query 0x3642). Capabilities focus_af_mode,
  focus_point (#88).

Changed

• image exposure_time is refused unless the exposure is manual, since a shutter time sent in
  automatic exposure freezes it; the error points to exposure manual --time.