Added

• Adding a dynamic dispatch to Aggregator Selector #497
• Add global::force_flush_tracer_provider #512
• Add config max_attributes_per_event and max_attributes_per_link #521
• Add dropped attribute counts to events and links #529

Changed

• Remove unnecessary clone in Key type #491
• Remove #[must_use] from set_tracer_provider #501
• Rename remaining usage of default_sampler to sampler #509
• Use current span for SDK-less context propagation #510
• Always export span batch when limit reached #519
• Rename message events to events #530
• Update resource merge behaviour #537
• Ignore links with invalid context #538

Removed

• Remove remote span context #508
• Remove metrics quantiles #525

Fixed

• Allow users to use custom export kind selector #526

Performance

• Improve simple span processor performance #502
• Local span perf improvements #505
• Reduce string allocations where possible #506