Version 3.0.9
* Workaround multi-interpreter initialization with tracemalloc so we don't
deadlock, by temporarily restoring to the default raw domain allocator.
* Collapse Glue.py exception tracebacks for less intimidation
* Add assertion during Share initialization so we don't get a surprise like
in View.root
* Changes to object hiding tag mechanism; guppy internals are again
properly hidden from heap traversal.
* Restore Interface attribute caching, and set View.root as chgable so that
the root attribute is not cached
* Python 3.8 support
* Fix richcompare for NodeTuple
* Warn, not error, when we get _NyHeapDefs_ from imported modules that
contain non-capsules
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