Fix linter issues

Author: velochy

pymc_bart/bart.py

@@ -95,7 +95,7 @@ class BART(Distribution):
     split_rules : Optional[SplitRule], default None
         List of SplitRule objects, one per column in input data.
         Allows using different split rules for different columns. Default is ContinuousSplitRule.
-        Other options are OneHotSplitRule and SubsetSplitRule that both apply to categorical variables.
+        Other options are OneHotSplitRule and SubsetSplitRule, both meant for categorical variables.
 
     Notes
     -----

pymc_bart/split_rules.py

@@ -12,10 +12,9 @@
 #   See the License for the specific language governing permissions and
 #   limitations under the License.
 
+from abc import abstractmethod
 from numba import njit
 import numpy as np
-from abc import abstractmethod
-
 
 class SplitRule:
     """
@@ -35,7 +34,8 @@ def divide(available_splitting_values, split_value):
 
 class ContinuousSplitRule(SplitRule):
     """
-    Standard continuous split rule: pick a pivot value and split depending on if variable is smaller or greater than the value picked.
+    Standard continuous split rule: pick a pivot value and split 
+    depending on if variable is smaller or greater than the value picked.
     """
 
     @staticmethod
@@ -77,8 +77,10 @@ def divide(available_splitting_values, split_value):
 
 class SubsetSplitRule(SplitRule):
     """
-    Choose a random subset of the categorical values and branch on if the value is within the chosen set.
-    This is the approach taken by  Sameer K. Deshpande. flexBART: Flexible Bayesian regression trees with categorical predictors. arXiv, `link <https://arxiv.org/abs/2211.04459>`__
+    Choose a random subset of the categorical values and branch on belonging to that set.
+    This is the approach taken by  Sameer K. Deshpande. 
+    flexBART: Flexible Bayesian regression trees with categorical predictors. arXiv, 
+    `link <https://arxiv.org/abs/2211.04459>`__
     """
 
     @staticmethod