8 * The base registry implementation has been moved to a new

     9   `logilab.common.registry` module (see #1916014). This includes code from :

    10 

    11   * `cubicweb.vreg` (the whole things that was in there)

    12   * `cw.appobject` (base selectors and all).

    13 

    14   In the process, some renaming was done:

    15 

    16   * the top level registry is now `RegistryStore` (was `VRegistry`), but that

    17     should not impact cubicweb client code ;

    18 

    19   * former selectors functions are now known as "predicate", though you still use

    20     predicates to build an object'selector ;

    21 

    22   * for consistency, the `objectify_selector` decoraror has hence be renamed to

    23     `objectify_predicate` ;

    24 

    25   * on the CubicWeb side, the `selectors` module has been renamed to

    26     `predicates`.

    27 

    28   Debugging refactoring dropped the more need for the `lltrace` decorator.

    29 

    30   There should be full backward compat with proper deprecation warnings.

    31 

    32   Notice the `yes` predicate and `objectify_predicate` decorator, as well as the

    33   `traced_selection` function should now be imported from the

    34   `logilab.common.registry` module.