* Intermediate version
* Fix yaml template & Successfully run rolling
* Be compatible with benchmark
* Get same results with previous linear model
* Black formatting
* Update black
* Update the placeholder mechanism
* Update CI
* Update CI
* Upgrade Black
* Fix CI and simplify code
* Fix CI
* Move the data processing caching mechanism into utils.
* Adjusting DDG-DA
* Organize import
* config.py: fix typo; static method
* fix typo in qlib/utils/paral
* 1) limit numpy version as numba support for 1.24+ has not been released; 2) no need to use custom numba version for pytest.
* remove useless argument
Co-authored-by: you-n-g <you-n-g@users.noreply.github.com>