The properties are still declared in the Python 3.5 compatible assignment
notation, and a class decorator that converts those to class annotations
as preferred by Blender 2.80.
This includes using `''` instead of `None` in some cases where an empty
string conveys 'nothing' equally well as `None`; in such cases keeping the
type the same rather than switching to another type is preferred.
This introduces version 2 of that file.
Version 1:
- Only the job doc was saved, with 'missing_files' added inside it.
Version 2:
- '_meta' key was added to indicate version.
- 'job' is saved in a 'job' key, 'misssing_files' still top-level key.
- 'exclusion_filter', 'project_settings', and
'flamenco_manager_settings' keys were added.
Lots to do:
- Doesn't call BAM yet to copy files onto the job storage folder (even
though you can configure that folder).
- Uses the same project as Attract, so you have to select it in an
unintuitive location. Also, you can only start Flamenco jobs on a project
that is Attract-enabled (and not necessarily Flamenco-enabled).
