chore(main): release 0.3.13 (#543)

🤖 I have created a release *beep* *boop* --- ## [0.3.13](v0.3.12...v0.3.13) (2025-11-13) ### Bug Fixes * return entire history when history_length=0 ([#537](#537)) ([acdc0de](acdc0de)) --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please).

Author: a2a-bot

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.3.13](https://github.com/a2aproject/a2a-python/compare/v0.3.12...v0.3.13) (2025-11-13)
+
+
+### Bug Fixes
+
+* return entire history when history_length=0 ([#537](https://github.com/a2aproject/a2a-python/issues/537)) ([acdc0de](https://github.com/a2aproject/a2a-python/commit/acdc0de4fa03d34a6b287ab252ff51b19c3016b5))
+
 ## [0.3.12](https://github.com/a2aproject/a2a-python/compare/v0.3.11...v0.3.12) (2025-11-12)