Adding a couple of additional info to histogram analysis output

fractalis/analytics/tasks/histogram/main.py

@@ -65,5 +65,8 @@ class HistogramTask(AnalyticTask):
                     'variance': variance
                 }
         return {
-            'stats': stats
+            'stats': stats,
+            'subsets': subsets,
+            'categories': categories,
+            'label': df['feature'].tolist()[0]
         }

tests/unit/analytics/histogram/test_histogram.py

@@ -35,7 +35,8 @@ class TestHistogramTask:
                                 subsets=[],
                                 data=df,
                                 categories=[cat_df])
-        assert 'stats' in result
+        assert all([key in result for key in
+                    ['stats', 'subsets', 'categories', 'label']])
         assert 'A' in result['stats']
         assert 'B' in result['stats']
         assert 0 in result['stats']['A']