rql #35054 cleanup edition api [open]
currently it's not clear which method have undo support, handle variable references, or barely edit the tree.
We should cleanup this.
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- pylint #6002 move import diagram options from pylint to preverse
- pylint #4288 message [en|dis]abling refactoring
- logilab-astng #8348 implement Visitors / refactoring
- logilab-astng #8847 pylint doesn't understand function attributes at all
- rql #35055 Select.having should be a node or None, not a list of nodes