refactor(custom): 修改agentchat.md

fix(custom): 修复agentchat.md中plantuml语法错误

docs(custom): agentchat.md添加conversableAgent对话调用过程

docs(custom): 添加conversableAgent笔记

docs(custom): 添加learning目录

update version (#4713)

fix: No context vars for async agents replies (#4640)

fix "keep_first_message" to make sure messages are in correct order, (#4653)

[Bug]: Bedrock client uses incorrect environment variables for authentication (#4657)

Add warning message when NoEligibleSpeaker (#4535)

Update version. (#4358)

Bugfix: Web surfer creating incomplete copy of messages (#4050)

fix: GroupChatManager async run throw exception if no eligible speaker (#4283)

update version (#4122)

fix(oai): fixing a bug when not using the OpenAIWrapper by making rate limiter config optional. (#4066)