Pathway

Added

- `tuple` reducer, that returns a tuple with values.
- `ndarray` reducer, that returns an array with values.

Changed
- `numpy` arrays of `int32`, `uint32` and `float32` are now converted to their 64-bit variants instead of tuples.
- KNNIndex interface to take columns as inputs.
- Reducers now check types of their arguments.

Fixed

- Fixed delayed reporting of output connector errors.
- Python objects are now freed more often, reducing peak memory usage.

Added

- `` (matrix multiplication) operator.

Changed

- Python version 3.10 or later is now required.
- Type checking is now more strict.

Changed

- Immediately forget queries in REST connector.
- Make type annotations mandatory in `Schema`.

Fixed

- Fixed IDs coming from CSV source.
- Fixed indices of dataframes from pandas transformer.

Added

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