v0.12.0

Added

• zone view list|save|rename|delete|go stores, lists and goes to named poses in the camera
  (0x1344, 0x1384, 0x1544, 0x13c4, 0x1604); status.zone.views lists them. They are not
  exclusion areas, the camera does not track by them. Capability zone_views (#74).
• hand area --pan MIN MAX --tilt MIN MAX and hand area-reset set the hand tracking area
  (0x2044..0x21c4) and put it back to the default (0x25c4..0x2684); hand gimbal on|off
  lets the hand tracker move the gimbal or holds it (0x26c4). Capabilities hand_area,
  hand_gimbal (#75).
• hand pan on|off, hand tilt on|off and hand return-after <seconds> (0x2344, 0x23c4,
  0x2444); status.hand has pan_enabled, tilt_enabled and return_after. Capabilities
  hand_axes, hand_return_after (#85).

Fixed

• zone on|off sends 0x08c4 only. 0x5084 has no handler in the firmware and the 100 ms pause
  was not needed: the camera followed 0x08c4 alone both ways (#81).
• A reply without a data section (type 0x09, what the camera answers to the view list while it
  has none) counted as "no answer" and ran into the poll timeout; it now reads as empty.

Changed

• zone.return stays a pose: the leading word of 0x4ec4 is the preset id, always 0, so the
  camera has no "not set" for it (#57).