β‘οΈ Performance
- **price_range**: 35% speed increase, reducing jargon and simplifying transformatio
- **_check_required_cols**: removed redundant `LazyFrame` collect
β
π€‘π§ͺ Tests
- **mandelbrot_channel**: finished `price_range()` tests || finished with testing helpersβ
- **setting up test for prior to refactor**: scope
- **price-range**: error condition test, passing `_rs_method` that doesnt exist
- **vol_filter**: tests filtering ability by counting the rows that are filtered
- **vol_buckets**: added error condition test when columns missig
πββ¬οΈ ββ¬οΈ Dependencies
- **dev**: added `line_profiler`