v0.2.9
- Combine per-station CSVs into grouped Parquet files — Per-station CSVs are now grouped by frequency and time slice, then concatenated into a single Parquet file per group (e.g. all
ogd-smn_*_d_recent.csvfiles becomesmn_d_recent.parquet) - Fix BOM handling in CSV decoding
- Add demo gif to README