Merge branch 'master' into fix/as-dataarray

Author: FBumann

README.md

@@ -143,13 +143,14 @@ Fri    0          4
 
 * [Cbc](https://projects.coin-or.org/Cbc)
 * [GLPK](https://www.gnu.org/software/glpk/)
-* [HiGHS](https://www.maths.ed.ac.uk/hall/HiGHS/)
+* [HiGHS](https://highs.dev/)
 * [Gurobi](https://www.gurobi.com/)
 * [Xpress](https://www.fico.com/en/products/fico-xpress-solver)
 * [Cplex](https://www.ibm.com/de-de/analytics/cplex-optimizer)
 * [MOSEK](https://www.mosek.com/)
 * [COPT](https://www.shanshu.ai/copt)
 * [cuPDLPx](https://github.com/MIT-Lu-Lab/cuPDLPx)
+* [Knitro](https://www.artelys.com/solvers/knitro/)
 
 Note that these do have to be installed by the user separately.