Pending tasks

Make the schema documentation to work on github
Implement parents2 and children2 used in kingraph
Use graphviz.FORMATS for the available output formats
Make pets part of the family
CLI: Controlling the output filename
CLI: Enable or disabling autoview
When Python<=3.7, use from __future__ import annotations to define Family inline https://pydantic-docs.helpmanual.io/usage/postponed_annotations/
Scaping quotes and other characters
class attribute keept on dot, so that svg has it
Coverage: born: None
Coverage: died: None
Coverage: escape without quotes
Move final format rendering to rendering
Coverage: handle final format rendering failures
Normalize: Warn unrelated persons
Review: on dupped person details, which version should prevail?
Configuration framework
Config: formats: output formats to use when no format specified by cli (default: pdf)
Config: dateformat: date format to display, defaut ISO-8601 ("%Y-%m-%d", resulting in YYYY-MM-DD)
Config: avatarsize: tuple (width, height) in pixels in which to embed the avatar picture
Config: persontemplate: being able to personalize
Config: picdir: prefix to the pics
Config: docdir: prefix to the docs
CLI documentation: typer nissaga.cli utils docs --output cli.md
CLI: Dash as input file
CLI: Dash as output file

Done