Inhibited the update operator `__ior__()` (`|=`) introduced in Python 3.9
PS: no pure Linux C builds, since they can't be published on Pypi. For now I'm focusing on the pure py implementation
2.0.2
Various improvements to the C implementation.
2.0.1
* C extension now supports also Python 3.8 on Linux. * Added wheel for the pure Python version.
2.0.0
Added a C extension. Speedup everywhere, sometimes faster than dict! C extension for now only for Linux and Python 3.9.
1.5.1
* speedup to hash computation * subclassing frozendict now is safer * now an exception type and message that is raised by immutability is aligned to the stdlib (tuple, frozenset)
1.5.0
Turned back to the `dict` API:
* removed `is_frozendict` and `initialized` attributes. Added `_initialized`. * removed `__add__()` and `__sub__()` methods (wait for [PEP 584](https://www.python.org/dev/peps/pep-0584/))