Roadmap

v0.1.3

Expand benchmark surface — add benchmarks for Panel analytical methods and the TemporalSeries generic path; decide coverage for storage backends.
Parquet I/O — read_parquet / write_parquet behind an optional parquet feature flag, with tests, benchmarks, and an example.
RollingSeries method expansion — add .sum(), .min(), .max(), .std() to complement the existing .mean(); keep the same lazy-handle design.
ChunkedBackend — implement the stub in crates/storage/chunked.rs; fixed-size chunks suited for append-heavy workloads; full test coverage mirroring ColumnarBackend and RowBackend.
Panel I/O — wide-format CSV reader/writer for Panel (one column per symbol, shared index column), so multi-asset data can be loaded without constructing each series by hand.
NaN handling utilities — forward_fill, backward_fill, fill_with(value) on TimeSeries.
Serde support — optional serde feature flag; derive Serialize/Deserialize for TimeSeries and Panel.

Forecasting module (crates/forecasting/) — ARIMA, exponential smoothing; large enough scope to warrant its own crate boundary.
Index-based slicing and resampling — slice(from, to), frequency conversion; requires a design decision on index-sorted invariant.