v0.4.5

## ✨ Enhancements

- Chunk add enable_merge parameter (#1014)
- Support Baichuan API (#1009)
- Add paper link and citation (#1006)
- Support SOLAR-10.7B-Instruct-v1.0 (#1001)
- Proxy model support count token (#996)
- Support multi round conversation operator (#986)
- RAG Refactor (#985)
- Multi agent sdk (#976)
- More AWEL operators and new prompt manager API (#972)
- Add new LLMClient and new build tools (#967)
- Add gemini support (#953)
- Support Mixtral-8x7B (#959)

## 🐞 Bug fixes

- Fix batch sync api error after switch segmentation strategy (#1029)
- Fix chatgpt message format bug (#1028)
- Fix delete Chroma by vector ids did not success (#1027)
- Fix .env should not build to static assets (#1012)
- Fix information\_schema (#999)
- Fix chat\_history\_db mysql message query bug (#989)
- Fix default proxyllm generator function (#971)
- Fix wenxin config in .env.template (#965)
- Fix Move the last user's information to the end (#960)
- Fix clickhouse connect error fix (#958)

## 🛠️ Other improvements
- Move PR Template in .github folder to automatically generate PR Template for each PR (#1024)
- Add Template for Pull Request (#1022)
- Update author info (#1013)
- Improve build performance (#1011)
- Fix baichuan API pylint error (#1010)
- Update README.zh.md with slack (#1003)
- Fix typo and new pre-commit config (#987)


Thank you to all our contributors for making this release possible!
@Aralhi, @Aries-ckt, @TJJ120635, @baichuan-assistant, @csunny, @fangyinc, @Hzh_97, @jinhucheung, @junewgl, @qidanrui, @vvycaaa, @xtyuns, @yhjun1026 and @yihong0618