qlib v0.9.7 release notes

feat: data improve, support parquet @you-n-g (#1966)
feat: use pydantic-settings for MLflow config and update dependencies @you-n-g (#1962)
refactor: introduce BaseDataHandler and unify fetch interface @you-n-g (#1958)
Implement geometric accumulation mode for risk_analysis function @SunsetWolf (#1938)
Add util function to help automatically get horizon @chenditc (#1509)
[feat] fix a bug and adapt general_nn for use with rdagent_qlib @WinstonLiyt (#1928)
DRAFT add Data Health Checker @benheckmann (#1574)

fix: upgrade the method of installing LightGBM on MacOS @SunsetWolf (#1980)
disable pylint error @SunsetWolf (#1960)
Fixing Security Vulnerabilities @SunsetWolf (#1941)
The plotly figure is empty in the code block "Basic data" @ziphei (#1902)
[fix] keep group_keys=False in Average Ensemble @lingbai-kong (#1913)
fix ci error @SunsetWolf (#1921)
Fix issue 1892 @SunsetWolf (#1916)
fix fillna bug @SunsetWolf (#1914)
fix col name error when fetch data @SunsetWolf (#1904)
fix pkl file not loading in StaticDataLoader @SunsetWolf (#1896)
Fix csi300 constituents url @SunsetWolf (#1883)
Fix the empty price_s case and self.instruments in SBBStrategyEMA. @ChiahungTai (#1677)
Bump version @SunsetWolf (#1872)

feat: data improve, support parquet @you-n-g (#1966)
fix: typo @EmreKb (#1943)
Update README.md @you-n-g (#1940)
doc: update README.md @you-n-g (#1929)
[Fix]Update data preparation part in README.md @YeewahChan (#1924)
fixed a problem with multi index caused by the default value of groupkey @SunsetWolf (#1917)
fix bugs in the documentation @SunsetWolf (#1918)
DRAFT add Data Health Checker @benheckmann (#1574)
Update links to chenditc/investment_data to always point to latest release @codecnotsupported (#1877)
Fix broken URL for RL @SunsetWolf (#1881)
Bump version @SunsetWolf (#1872)

fixed a problem with multi index caused by the default value of groupkey @SunsetWolf (#1917)

qlib v0.9.7