Merge branch 'dev' into f-parents

CHANGELOG.md

@@ -10,6 +10,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added ###
 
 ### Changed ###
+- If the `parents` key is used in a cfood at a lower level for a Record that
+  already has a Parent (because it was explicitly given or the default Parent),
+  the old Parent(s) are now overwritten with the value belonging to the 
+  `parents` key.
 
 ### Deprecated ###
 

src/caoscrawler/crawl.py

@@ -36,6 +36,7 @@ import importlib
 import logging
 import os
 import sys
+import traceback
 import uuid
 import warnings
 from argparse import RawTextHelpFormatter

src/doc/how-to-upgrade.md

 
 # How to upgrade
+## 0.6.x to 0.7.0
+If you added Parents to Records at multiple places in the CFood, you must now
+do this at a single location because this key now overwrites previously set
+parents.
+
 ## 0.5.x to 0.6.0
 [#41](https://gitlab.com/caosdb/caosdb-crawler/-/issues/41) was fixed. This
 means that you previously used the name of Entities as an identifying