[migration/3.21.0] performance and reliability fixes
- use EXCEPT instead of NOT IN, seems to improve performance
dramatically on postgresql
- delete rows from cw_<etype> tables whose eid is unknown
- deal with missing/dangling required inline relations (by deleting the
subject entities) instead of asserting
- fix/improve print statements
- don't ask for confirmation before running pure select queries
.. _cwprops:
The property mecanism
---------------------
.. XXX CWProperty and co
Property API
~~~~~~~~~~~~
.. XXX feed me
Registering and using your own property
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.. XXX feed me