Update ISSUE_TEMPLATE.md

ISSUE_TEMPLATE.md

@@ -1,5 +1,24 @@
+<!---
 PLEASE NOTE:
 Before creating an issue, please think about wheter you are really reporting an issue or just have a question/problem. The latter are better suited for Stackoverflow or gitter (https://gitter.im/libaums). The best approach for a question or problem regarding libaums is to ask on Stackoverflow and hint me to the question via gitter!
-
-If you are sure that you would like to open an issue, please delete all of this message and continue. 
 Thank you!
+-->
+
+### Problem
+
+
+### Expected behavior
+
+
+### Actual behavior
+
+
+#### Stacktrace of Excpetion
+
+```
+(if exists)
+```
+
+
+### Code where problem occurs
+