Added:
- **langchain-mistralai==1.1.5** (10 Jun): Patch release that fixes content block token support in callbacks, applies a hotfix for OpenAI minimum core dependency, refreshes model profile data, stabilises integration tests with rate limiting/retries, and updates several dependencies (idna, langsmith, urllib3, langchain-core).
- **langchain-core==1.4.4** (10 Jun): Patch release that bumps lockfiles, fixes content block token support in callbacks, improves typing for `Runnable.__or__` and some generics, accepts sequence tool error content, types structured tool error handler output, and adds documentation for multimodal handling in `get_buffer_string`.
- **langchain-classic==1.0.8** (10 Jun): Patch release that includes the core hotfixes for callbacks and lockfiles, improves `Runnable.__or__` typing, applies the OpenAI hotfix, and updates dependencies (pyarrow, starlette, aiohttp, idna, langsmith, urllib3, mistune) as well as merging the v1.4 branch into master.
- **langchain-anthropic==1.4.5** (10 Jun): Patch release that fixes content block token support in callbacks, refreshes model profile data, applies the OpenAI hotfix, and stabilises tests.

Changed:
- Repository statistics: Issues count increased from 377 to 378 (+1), Pull requests count decreased from 131 to 130 (-1).

Removed:
- The following older releases were removed from the page: langchain-core 1.4.3, langchain-core 1.4.2, langchain-core 1.4.1, and langchain-perplexity 1.3.2. Their associated change logs and reaction counts were also removed.