Breaking change: class Connection no longer inherits from Thread

[cristipufu]

This recent change probably breaks many integrations: 1cd60ad#diff-3716bdfa73f4bf05a8cbf62e271bc61298991ae6a7a6cab1d293a23342b86a4cL47-R48

One example is this one: https://github.com/langchain-ai/langgraph/blob/main/libs/checkpoint-sqlite/langgraph/checkpoint/sqlite/aio.py#L284

We should have it documented as a breaking-change in the release notes

Reference: langchain-ai/langgraph#6583

[namoshizun]

Yeah it is quite frustrating... I was using is_alive to check whether the connection has been previously closed. Now it doesn't seem to have a public interface for checking that anymore.