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- Raise more informative KeyError subclasses from the utility when intids
or objects cannot be found. This distinguishes them from errors
raised by normal dictionaries or BTrees, and is useful in unit
testing or when persisting intids or sharing them among processes
for later or concurrent use.
- Propagate ``POSKeyError`` from ``queryId`` instead of returning the
default object. This exception indicates a corrupt database, not a
missing object. The ``queryObject`` function already behaved this way.
- Stop depending on ZODB for anything except testing.
- Add support for Python 3.5 and PyPy3 5.2.
- Drop support for Python 2.6.