What's Changed
* Refactor to extract and transform flow with pipeline interface by goldmermaid in 48
* Clean configs, update README, and polish notebooks jojortz in 49, 50, 51
* Add Nougat PDF loading 54, 56
* More refactor by goldmermaid 59
* Refactor by boqiny 61
* Readme update, bitsandbytes, and table left align by C-sirui 63