v0.4.0

Added

• Added Duration.t() SQL parameter support.
• Added Ecto time_bucket/2,3 compatibility for pinned Elixir durations, origins, and offsets.
• Added typed Ecto series/1,3 helpers for DuckDB generate_series date/timestamp sources.
• Added JSON SQL parameters/path helpers plus Ecto access syntax and type/2 casts.
• Added Ecto regular-expression helpers for DuckDB regexp_* functions with compatible ~r modifier translation.
• Added Ecto text helpers for common DuckDB string predicates and splitting functions.
• Added a public API audit for 0.4.0 and locked accepted naming decisions.
• Added case_when syntax for DuckDB CASE WHEN and atom date parts.
• Added ordered list/2 and string_agg/3 with NULL ordering.
• Added Ecto count(..., :distinct) and coalesce/2 SQL generation.
• Added arg_max/3, arg_min/3, approximate aggregate, boolean aggregate, Bitwise-style bit aggregate, statistical, precise floating-point aggregate, weighted aggregate, product, and histogram helpers.
• Added value window functions with fragment-backed frames and future-ready window frame helper macros.
• Added direct and Ecto queryable SUMMARIZE profiling helpers.
• Added DuckDB function snapshot task with normalized QuackDB type specs for overload auditing.
• Added protocol coverage and quack-ts parity docs plus expanded type/null/append conformance coverage, including stricter variable-vector value count validation and nested dictionary/constant vector coverage.
• Added source sampling, JSON source composition, lakehouse workflow docs, metadata examples, ordinary Elixir map encoding for explicit DuckDB MAP append columns, enumerable stream append, and Table.Reader input append.

Fixed

• Rejected malformed Quack logical type objects that omit required type ids, metadata type tags, or child type fields.