0.8.1
- Implemented LGMRES solver ("Loose" GMRES, [BaJM05]).
- Implemented FGMRES solver (Flexible GMRES, [Saad03]).
- GMRES uses real residual instead of preconditioned one in termination condition.
- Performance improvements in components using QR decomposition (spai1,
aggregation with null-space provided). - Provided python examples.
- Minor bug fixes and improvements.