- Removed multiple deprecated APIs (e.g., AggregationTemporality, AddScraper, ZapOptions, WithForceUnmarshaler, DefaultMetricsBuilderConfig, ConfigWatcher, LoggingOptions), introducing breaking changes.
- Improved performance by eliminating allocations in WriteInt64/WriteUint64 and migrating network core types to schema‑based configuration.
- Fixed bugs related to URI expansion, feature‑gate ID validation, scraper shutdown timing, and proper marshaling of TextMarshaler/Unmarshaler types.