Zope.app.appsetup

-------------------

- Added stacking of storages for layer/test level setup separation in derived
ZODBLayers.

-------------------

- Updated tests to run with `zope.testing >= 3.10`, requiring at least this
version and `zope.testrunner`.

- Switch ``IErrorReportingUtility copy_to_zlog`` field to ``True``.

- Using Python's `doctest` module instead of depreacted
`zope.testing.doctest`.

-------------------

- Made `zope.testing` an optional (test) dependency.

- Removed test dependency on `zope.app.testing`.

-------------------

- Import hooks functionality from zope.component after it was moved there from
zope.site.

- Import ISite from zope.component after it was moved there from
zope.location. This lifts the dependency on zope.location.

- Added missing install dependency on `zope.testing`.

-------------------

- Using ``zope.processlifetime`` interfaces and implementations
directly instead of BBB imports from ``zope.app.appsetup``.

- Got rid of depencency on ``zope.app.component``.

- Got rid of test dependency on ``zope.app.security``.

-----------------

- Event interfaces / implementations moved to ``zope.processlifetime``,
version 1.0. Depend on this package, and add BBB imports.