- Many changes to the interfaces all simplifying the usage
- Most of the functions are now usable for both Nat- and XNat-indexed frames
- Some matrix algorithms are implemented (SVD, QR)
- Loads of numerical stability improvements
- Changed
Idx
indexing to zero-based from 1-based - Changed
Idxs
dimensions ordering from inverse lexicographic to lexicographic - Changed
DataFrame
memory layout from column-major to row-major - Various minor changes