Changes in version 0.1.7 (2026-05-31)                  

  - Fixed bugs in dogleg and double_dogleg so that when the user
    supplies an exact Hessian, it is used directly in the optimization
    rather than being overridden by the BFGS approximation.

                 Changes in version 0.1.6 (2026-04-11)                  

  - Replaced the quadratic example with the Rosenbrock example.
    Accordingly, removed dfp.R, which had failed to converge on this
    example in certain environments.

                        Changes in version 0.1.5                        

Bug Fixes

  - Fixed a convergence detection failure when the optimizer reaches the
    exact solution in a single step. A post-step gradient check has been
    added to all eight optimization algorithms.
  - Replaced test-rosenbrock.R with test-quadratic.R to verify
    convergence on a simple quadratic function, consistent with the
    example in the dfp documentation.

                        Changes in version 0.1.4                        

  - Resubmission for CRAN.
  - Removed tests/testthat/test-rosenbrock.R, which was inadvertently
    included in the previous submission and caused a convergence failure
    on M1 Mac (ATLAS BLAS)

                        Changes in version 0.1.3                        

  - Resubmission for CRAN.
  - Replaced the example in 'dfp.R' with a simpler one.

                        Changes in version 0.1.1                        

  - Resubmission for CRAN.
  - Fixed CRAN check errors in multirel examples and refined LaTeX
    documentation in dfp.R.
  - Implements a flexible suite of optimization algorithms (BFGS, DFP,
    Dogleg, Newton, etc.).
  - Features strict convergence control with eight combinable criteria.
  - Includes a built-in mechanism for final Hessian positive
    definiteness verification.