[repository] forbid usage of set_attributes() in before_add_entity
set_attributes() will generate a RQL query that will silently fail.
An explicit error is better.
You can still use the ``entity[attr] = value`` notation that
won't generate a SQL query but still update the inner state
of the entity and its edited_attributes attribute.
\.svn
^build$
^dist$
\.pyc$
\.pyo$
\.bak$
\.old$
\~$
\#.*?\#$
\.swp$
^doc/book/en/apidoc$