fix NEWS.md formatting

Author: krzyzinskim

NEWS.md

@@ -1,49 +1,26 @@
-treeshap 0.2.5
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-* Wrap more examples in `\donttest{}`. 
-
-treeshap 0.2.4
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-* Fixed issues with documentation. 
-* Replaced `\dontrun{}` with `\donttest{}` or unwrapped less computationally expensive examples. 
-
-treeshap 0.2.3
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-* Changed use of bitwise '|' to logical '||' with boolean operands in C++ files. 
-
-treeshap 0.2.2
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-* Prepared for initial CRAN submission.
-* Removed `catboost.unify` function (as the `catboost` package is not on CRAN)
-
-treeshap 0.2.1
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+# treeshap 0.2.5
+* Removed `catboost.unify` function (as the `catboost` package is not on CRAN); it is available on a separate branch
 * Fixed `randomForest.unify` for classifiers ([#12](https://github.com/ModelOriented/treeshap/issues/12), [#23](https://github.com/ModelOriented/treeshap/issues/23))
 * Implemented consolidated (generic) `unify` function ([#18](https://github.com/ModelOriented/treeshap/issues/18))
 * An error is thrown when the data passed to the `unify` or `treeshap` functions contain variables that are not used by the model ([#14](https://github.com/ModelOriented/treeshap/issues/14))
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-treeshap 0.2.0
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 * Added implementation for random survival forests created using `ranger` ([#22](https://github.com/ModelOriented/treeshap/pull/22), [#26](https://github.com/ModelOriented/treeshap/pull/26))
 * Fixed GitHub Actions, check and test issues ([#25](https://github.com/ModelOriented/treeshap/pull/25), [#29](https://github.com/ModelOriented/treeshap/pull/29)) 
+* Fixed issues with documentation and examples
+* Changed use of bitwise '|' to logical '||' with boolean operands in C++ files
 
-treeshap 0.1.1
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+# treeshap 0.1.1
 * Fixed `plot_contribution` when `max_vars` is larger than the number of variables ([#16](https://github.com/ModelOriented/treeshap/issues/16))
 
-treeshap 0.1.0
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+# treeshap 0.1.0
 * Rebuilded treeshap function so it now stores observations and whole dataset
 * Rebuilded all unifiers so they require passing data.
 
-treeshap 0.0.1
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+# treeshap 0.0.1
 * Made package pass all checks
 * Fixed infinite recursion issue in ranger  ([see commit](https://github.com/ModelOriented/treeshap/commit/eff70d8095932128151fb4c015fd61b89635aa9e))
 * If there is no missing value in the model, unifiers return `NA` for `Missing` column ([see commit](https://github.com/ModelOriented/treeshap/commit/eff70d8095932128151fb4c015fd61b89635aa9e))
 
-treeshap 0.0.0.9000
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+# treeshap 0.0.0.9000
 * treeshap is now public
 * Implemented fast computations of tree ensemble shap values in C++
 * Implemented unifiers for catboost, lightgbm, xgboost, gbm, ranger and randomForest