What's Changed
* Harrison/update regex by hwchase17 in https://github.com/hwchase17/langchain/pull/1534
* Added client_settings support for chromadb vecstore by floleuerer in https://github.com/hwchase17/langchain/pull/1528
* Harrison/gdrive pdf by hwchase17 in https://github.com/hwchase17/langchain/pull/1433
* [DOCS] Assorted wording, punctuation, and consistency revisions by gidler in https://github.com/hwchase17/langchain/pull/1443
* Added other evaluation metrics for data-augmented QA by neubig in https://github.com/hwchase17/langchain/pull/1521
* Harrison/chat history formatter1 by hwchase17 in https://github.com/hwchase17/langchain/pull/1538
* Harrison/contributing by hwchase17 in https://github.com/hwchase17/langchain/pull/1542
* Harrison/youtube loader by hwchase17 in https://github.com/hwchase17/langchain/pull/1545
* Harrison/remote paths pdf by hwchase17 in https://github.com/hwchase17/langchain/pull/1544
* Harrison/hf inf error by hwchase17 in https://github.com/hwchase17/langchain/pull/1543
* Harrison/chunk size by hwchase17 in https://github.com/hwchase17/langchain/pull/1549
* Harrison/prompt layer by hwchase17 in https://github.com/hwchase17/langchain/pull/1547
* docs: fix typo in modules/indexes/chain_examples/question_answering by BrentonWheeler in https://github.com/hwchase17/langchain/pull/1551
* add chat agent by hwchase17 in https://github.com/hwchase17/langchain/pull/1509
* bump version to 106 by hwchase17 in https://github.com/hwchase17/langchain/pull/1562
New Contributors
* gidler made their first contribution in https://github.com/hwchase17/langchain/pull/1443
* neubig made their first contribution in https://github.com/hwchase17/langchain/pull/1521
* BrentonWheeler made their first contribution in https://github.com/hwchase17/langchain/pull/1551
**Full Changelog**: https://github.com/hwchase17/langchain/compare/v0.0.105...v0.0.106