• The SUPERFLUOUS_NO_LINT warning has been removed from the glinter. It likely did more harm than good, and makes it hard to make metrics.yaml files that pass across different versions of glean_parser.
• Expired metrics will now produce a linter warning, EXPIRED_METRIC.
• Expiry dates that are more than 730 days (~2 years) in the future will produce a linter warning, EXPIRATION_DATE_TOO_FAR.
• Allow using the Quantity metric type outside of Gecko.
• New parser configs custom_is_expired and custom_validate_expires added. These are both functions that take the expires value of the metric and return a bool. (See Metric.is_expired and Metric.validate_expires). These will allow FOG to provide custom validation for its version-based expires values.