Tabmat

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**Bug fix**

- Allow to link to alternatively suffixed jemalloc installation to work around `113 <https://github.com/Quantco/tabmat/issues/113>`_ .

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**Bug fix**

- The license was mistakenly left as proprietary. Corrected to BSD-3-Clause.

**Other changes**

- ReadTheDocs integration.
- CONTRIBUTING.md
- Correct pyproject.toml to work with PEP-517

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**Breaking changes**:

- The package has been renamed to ``tabmat``. CELEBRATE!
- The :func:`one_over_var_inf_to_val` function has been made private.
- The :func:`csc_to_split` function has been re-named to :func:`tabmat.from_csc` to match the :func:`tabmat.from_pandas` function.
- The :meth:`tabmat.MatrixBase.get_col_means` and :meth:`tabmat.MatrixBase.get_col_stds` methods have been made private.
- The :meth:`cross_sandwich` method has also been made private.

**Bug fix**

- :func:`StandardizedMatrix.transpose_matvec` was giving the wrong answer when the `out` parameter was provided. This is now fixed.
- :func:`SplitMatrix.__repr__` now calls the `__repr__` method of component matrices instead of `__str__`.

**Other changes**

- Optimized the :meth:`tabmat.SparseMatrix.matvec` and :meth:`tabmat.SparseMatrix.transpose_matvec` for when ``rows`` and ``cols`` are None.
- Implemented :func:`CategoricalMatrix.__rmul__`
- Reorganizing the documentation and updating the text to match the current API.
- Enable indexing the rows of a ``CategoricalMatrix``. Previously :func:`CategoricalMatrix.__getitem__` only supported column indexing.
- Allow creating a ``SplitMatrix`` from a list of any ``MatrixBase`` objects including another ``SplitMatrix``.
- Reduced memory usage in :meth:`tabmat.SplitMatrix.matvec`.

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**Bug fix**

- In :func:`SplitMatrix.sandwich`, when a col subset was specified, incorrect output was produced if the components of the indices array were not sorted. :func:`SplitMatrix.__init__` now checks for sorted indices and maintains sorted index lists when combining matrices.

**Other changes**

- :func:`SplitMatrix.__init__` now filters out any empty matrices.
- :func:`StandardizedMatrix.sandwich` passes ``rows=None`` and ``cols=None`` onwards to the underlying matrix instead of replacing them with full arrays of indices. This should improve performance slightly.
- :func:`SplitMatrix.__repr__` now includes the type of the underlying matrix objects in the string output.

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**Bug fix**

Sparse matrices now accept 64-bit indices on Windows.

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**Bug fix**:

Split matrices now also work on Windows.