Merge commit 'a825980f'

* commit 'a825980f':
  mov: Export bounds and padding from spherical metadata
  spherical: Add tiled equirectangular type and projection-specific properties
  mov: Validate cubemap layout

This commit is a noop, see
ac8c72f8
1b7ffddb
022b4ea5Merged-by: James Almer <jamrial@gmail.com>