is it a massive change? yes, will it cause serious problems for existing apps in production? yes. but think of this as one of those python 2 to 3 moments. They

is it a massive change? yes, will it cause serious problems for existing apps in production? yes. but think of this as one of those python 2 to 3 moments. They could improve the spec dramatically and cut the parser down by a crazy amount to detect edge cases. It ll be a bright direction forward for YAML