[langchain]: <Can not access to previous langchain versions(0.1, 0.2, 0.3) docs any more>

[choshiho]

Type of issue

question

Language

Python

Description

After upgrading Langchain to version 1.0, the previously familiar documentation links (such as Langchain 0.3, Langchain 0.2, Langchain 0.1), including those for retrievers, output parsers, and various other documents, have all become invalid. They now automatically redirect to the new version of Langchain's page. The experience after the upgrade is terrible—I can't find anything anymore.