devel/py-strictyaml: New port: Strict, typed YAML parser

StrictYAML is a type-safe YAML parser that parses and validates a
restricted subset of the YAML specification.

Priorities:

• Beautiful API.
• Refusing to parse the ugly, hard to read and insecure features of YAML like the Norway problem.
• Strict validation of markup and straightforward type casting.
• Clear, readable exceptions with code snippets and line numbers.
• Acting as a near-drop in replacement for pyyaml, ruamel.yaml or poyo.
• Ability to read in YAML, make changes and write it out again with comments preserved.
• Not speed, currently.

WWW: https://hitchdev.com/strictyaml

PR: 273232