chore(main): release 0.3.4

Author: a2a-bot

CHANGELOG.md

@@ -1,5 +1,17 @@
 # Changelog
 
+## [0.3.4](https://github.com/a2aproject/a2a-python/compare/v0.3.3...v0.3.4) (2025-08-27)
+
+
+### Features
+
+* Add extensions support to `TaskUpdater.add_artifact` ([#436](https://github.com/a2aproject/a2a-python/issues/436)) ([598d8a1](https://github.com/a2aproject/a2a-python/commit/598d8a10e61be83bcb7bc9377365f7c42bc6af41))
+
+
+### Bug Fixes
+
+* resolve streaming endpoint deadlock by pre-consuming request body ([#426](https://github.com/a2aproject/a2a-python/issues/426)) ([4186731](https://github.com/a2aproject/a2a-python/commit/4186731df60f7adfcd25f19078d055aca26612a3))
+
 ## [0.3.3](https://github.com/a2aproject/a2a-python/compare/v0.3.2...v0.3.3) (2025-08-22)