Add support for custom SQL aggregates #881
Merged
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Would there be interest in supporting SQLite custom aggregates (and if so, possibly also custom window functions)? This PR adds support for custom aggregates implemented in swift, allowing both a relatively low-level API requiring unsafe pointers to maintain state, as well as a more user-friendly,
reduce
-style API. I've attempted to follow the style of the existing code implementing custom SQL functions, and added tests for both API styles.