v0.0.2, CRAN update

• Provide solvers for eigenvalue problems
  • Arnoldi and Lanczos methods for sparse matrices
    • Solver for the Upper Hessenberg form taken from the Spectra library
  • Interface to Eigen solvers for dense matrices
• Fix small bugs and tweak documentation
  • Fix symmetry check, default value for ordering, and return for CG solver
  • Remove dimension constraints for the QR solvers
  • Thanks to helpful comments by Bettina Grün

v0.0.1, CRAN submission

• Provide interface to Eigen solvers
  • Direct: LU, QR, Cholesky
  • Iterative: Conjugate Gradient, BiCGSTAB, Least Squares CG