Added a missing import

greenmine/projects/issues/api.py

@@ -15,6 +15,7 @@ from . import models
 from . import permissions
 from . import serializers
 
+import reversion
 
 class SeverityViewSet(ModelListViewSet):
     model = models.Severity

greenmine/projects/issues/serializers.py

@@ -39,6 +39,7 @@ class IssueSerializer(serializers.ModelSerializer):
         model = models.Issue
 
     def get_comment(self, obj):
+        # TODO
         return ""
 
     def get_issues_diff(self, old_issue_version, new_issue_version):