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RoughPy 0.0.5 Release Notes
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* Added free functions for performing free-tensor, shuffle, half-shuffle multiplication between pairs of tensors (of either kind).
* Added free function for applying the adjoint of left free tensor multiplication to arbitrary tensors.
* Improved exception usage, messages now include filename, lineno, and function name to help locate c++ exceptions passed through to Python.
* Basis objects in Python are now iterable.
* Added ``split_n`` and ``to_index`` methods to Tensor key.