v1.19.0

HiGHS v1.19.0

Diff since v1.18.2

Merged pull requests:

• Add MathOptIIS (#285) (@joaquimg)
• Prep for v1.19.0 (#295) (@odow)

Closed issues:

• Add a concurrent optimizer (#290)
• An infeasibility that seems to be dependent on the state of HiGHS (or JuMP) (#294)

v1.18.2

HiGHS v1.18.2

Diff since v1.18.1

Merged pull requests:

• Disable kHighsCallbackSimplexInterrupt in default callback (#292) (@odow)
• Prep for v1.18.2 (#293) (@odow)

Closed issues:

• Updating to 1.18.0 (or 1.18.1) slows down optimization considerably (#291)

v1.18.1

HiGHS v1.18.1

Diff since v1.18.0

Merged pull requests:

• Fix gen/libhighs.jl to point to the latest commit (#284) (@odow)
• Add a citation to the README.md (#286) (@odow)
• Fix issue 287 (#288) (@odow)
• Prep for v1.18.1 (#289) (@odow)

Closed issues:

• Infeasible model but primal feasible point (#287)

v1.18.0

HiGHS v1.18.0

Diff since v1.17.0

Merged pull requests:

• Update to HiGHS_jll@1.11.0 (#281) (@odow)
• Prep for v1.18.0 (#282) (@odow)
• Add gen/prologue.jl to simplify rebuilding C API (#283) (@odow)

Closed issues:

• Adding the C++ class of callback function to JuMP model ? (#280)

v1.17.0

HiGHS v1.17.0

Diff since v1.16.0

Merged pull requests:

• Pass names to the solver in HiGHS.Optimizer (#276) (@odow)
• Fix typo in README.md (#277) (@odow)
• Prep for v1.17.0 (#279) (@odow)

Closed issues:

• InexactError when solving a mixed integer programming problem (#278)

v1.16.0

HiGHS v1.16.0

Diff since v1.15.0

Merged pull requests:

• Add HiGHS.ComputeInfeasibilityCertificate attribute (#274) (@odow)
• Prep for v1.16.0 (#275) (@odow)

Closed issues:

• Add option to turn off certificates (#273)

v1.15.0

HiGHS v1.15.0

Diff since v1.14.0

Merged pull requests:

• Add support for CTRL+C in Highs_run (#268) (@odow)
• Improve test coverage (#269) (@odow)
• Add support for HiGHS@1.10.0 (#270) (@odow)
• Prep for v1.15.0 (#271) (@odow)

Closed issues:

• Fail to solve a mixed integer programming problem (#267)

v1.14.0

HiGHS v1.14.0

Diff since v1.13.0

Merged pull requests:

• Add support for MOI.write_to_file (#265) (@odow)
• Prep for v1.14.0 (#266) (@odow)

Closed issues:

• Modify-after-free bug (#202)
• Highs_getRowsByRange is slow (#207)
• Add a way to trace the C API (#257)

v1.13.0

HiGHS v1.13.0

Diff since v1.12.2

Merged pull requests:

• added node limit (#259) (@matbesancon)
• Fix CI badge in README.md (#260) (@odow)
• Add support for HiGHS@1.9.0 (#261) (@odow)
• Add support for ObjectiveFunction{VectorAffineFunction} (#263) (@odow)
• Prep for v1.13.0 (#264) (@odow)

Closed issues:

• Add support for ObjectiveFunction{VectorAffineFunction} (#262)

v1.12.2

HiGHS v1.12.2

Diff since v1.12.1

Merged pull requests:

• Fix dual objective value with free variable (#255) (@odow)
• Prep for v1.12.2 (#256) (@odow)

Closed issues:

• Caculation speed in Julia is a bit slower than that in the direct execution of HiGHS binary (#253)
• Error when querying dual objective value for an unbounded model with at least one unbounded variable (#254)