chore: release v0.3.1

- correctness/stability patch: look-ahead filter, router crash-safety, checkpoint
  identity, crypto sentiment sources, configurable retries, Bedrock API-key auth
- adds Claude Sonnet 5 / Fable 5 support

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "tradingagents"
-version = "0.3.0"
+version = "0.3.1"
 description = "TradingAgents: Multi-Agents LLM Financial Trading Framework"
 readme = "README.md"
 requires-python = ">=3.10"