chore: release v0.2.1

[jwilger]

🤖 New release

• union_square: 0.2.0 -> 0.2.1 (✓ API compatible changes)

Changelog

0.2.1 - 2025-07-29

Added

• add binary release infrastructure for cross-platform distribution (#156)

Fixed

• (version) replace primitive String with ModelId in VersionComparison (#154)

Other

• complete TDD adoption and implement remaining streaming tests (#158)

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This PR was generated with release-plz.

[Copilot]

Pull Request Overview

This is a routine release PR bumping the package version from 0.2.0 to 0.2.1. The release includes a single bug fix that replaces primitive String with ModelId in VersionComparison to improve type safety.

• Version bump from 0.2.0 to 0.2.1 in Cargo.toml
• Addition of changelog entry documenting the fix for VersionComparison type usage

Reviewed Changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated no comments.

File	Description
Cargo.toml	Updates package version to 0.2.1
CHANGELOG.md	Adds changelog entry for v0.2.1 release with fix details

[github-actions]

📊 Performance Benchmark Results

Benchmark Comparison (base vs current)

group                                                            base                                   current
-----                                                            ----                                   -------
audit_event_serialization/request_received_event                 1.00    602.2±5.26ns        ? ?/sec    1.04    626.1±5.65ns        ? ?/sec
audit_event_serialization/response_received_event                1.00    582.7±8.82ns        ? ?/sec    1.01    590.4±4.92ns        ? ?/sec
complete_proxy_flow_simulation/latency_requirement_validation    1.00  1716.7±44.41ns        ? ?/sec    1.01  1730.0±45.30ns        ? ?/sec
complete_proxy_flow_simulation/simulated_proxy_request           1.00      3.3±0.08µs        ? ?/sec    1.01      3.4±0.08µs        ? ?/sec
error_handling_performance/error_creation_and_conversion         1.00   1235.8±8.04ns        ? ?/sec    1.01  1242.1±12.03ns        ? ?/sec
hot_path_simulation/complete_hot_path_flow                       1.00  1765.5±15.00ns        ? ?/sec    1.00  1758.2±10.32ns        ? ?/sec
hot_path_simulation/hot_path_latency_distribution                1.00  1687.3±24.33ns        ? ?/sec    1.00  1691.8±13.75ns        ? ?/sec
memory_allocation/audit_event_allocation                         1.00  1977.4±12.64ns        ? ?/sec    1.01      2.0±0.02µs        ? ?/sec
middleware_stack_performance/auth_validation                     1.00     43.9±0.13ns        ? ?/sec    1.01     44.2±0.09ns        ? ?/sec
middleware_stack_performance/logging_metadata                    1.00     86.4±2.54ns        ? ?/sec    1.09     94.2±2.19ns        ? ?/sec
middleware_stack_performance/request_id_generation               1.02   563.6±17.93ns        ? ?/sec    1.00    550.0±1.29ns        ? ?/sec
newtype_validation/api_key_validation                            1.03     10.3±0.05ns        ? ?/sec    1.00     10.0±0.06ns        ? ?/sec
newtype_validation/request_id_generation                         1.00    484.5±1.67ns        ? ?/sec    1.02    492.0±2.01ns        ? ?/sec
newtype_validation/target_url_validation                         1.00     10.9±0.03ns        ? ?/sec    1.03     11.2±0.02ns        ? ?/sec
ring_buffer_performance/concurrent_writes                        1.01    345.1±5.35µs        ? ?/sec    1.00    341.0±3.93µs        ? ?/sec
ring_buffer_performance/write_10kb                               1.00      5.0±0.05ns        ? ?/sec    1.00      5.0±0.05ns        ? ?/sec
ring_buffer_performance/write_1kb                                1.01      5.0±0.12ns        ? ?/sec    1.00      5.0±0.02ns        ? ?/sec
ring_buffer_performance/write_64kb                               1.00      5.2±0.40ns        ? ?/sec    1.00      5.2±0.39ns        ? ?/sec
streaming_service_performance/metadata_extraction                1.00    188.2±1.28ns        ? ?/sec    1.00    187.9±0.43ns        ? ?/sec
streaming_service_performance/uri_construction                   1.00     21.1±0.02ns        ? ?/sec    1.00     21.2±0.04ns        ? ?/sec

Memory Profile Summary

=== Concurrent Operations Memory Profile ===
Thread 1 completed 1000 writes
Thread 3 completed 1000 writes
Thread 4 completed 1000 writes
Thread 9 completed 1000 writes
Thread 8 completed 1000 writes
Thread 0 completed 1000 writes
Thread 7 completed 1000 writes
Thread 2 completed 1000 writes
Thread 6 completed 1000 writes
Thread 5 completed 1000 writes
Completed concurrent allocation test

Memory profiling complete!
dhat: Total:     208,683,684 bytes in 22,233 blocks
dhat: At t-gmax: 134,418,480 bytes in 2,100 blocks
dhat: At t-end:  1,024 bytes in 1 blocks
dhat: The data has been saved to dhat-heap.json, and is viewable with dhat/dh_view.html

✅ No significant performance regressions detected.

_{All latency requirements (<5ms) are enforced by the test suite.}