Carefree-data

Miscellaneous fixes and updates.

carefree-data` is pretty light-weight now, by moving cython implementations to `carefree-cython`.

Miscellaneous fixes and updates.

Release Notes

`TabularData`
🎉🎉 `TabularData` now supports using [`optbinning`](https://github.com/guillermo-navas-palencia/optbinning) as binning backend, which can boost performances of some tasks! 🎉🎉

Misc
+ Implemented `Logarithm` processor.
+ Fixed bugs - preset settings cannot take effects.

Release Notes

`TabularData`
🎉🎉 `TabularData` now uses [`datatable`](https://github.com/h2oai/datatable) as backend, which significantly improves the performances on file inputs! 🎉🎉

Miscellaneous fixes and updates.