New release R20200930
Time to flush out a new release with some significant improvements and fixes.
Main fixes and additions
- Semidefinite cone supported in bmibnb without any need for nonlinear SDP solver (detailed post coming!)
 - Improved performance in global solver bmibnb (related post coming!)
 - Improved and generalized framework inside bmibnb (detailed post coming!)
 - Improved performance in mixed-integer solver bnb
 - Support for nonconvex quadratics in Gurobi
 - Automatically sets ‘optimalitytarget’ for nonconvex QP in Cplex
 - Support for full options list in Gurobi
 - Support for full options list in Xpress
 - Support for Snopt 3.0
 - Solver option for kktqp
 - More informative diagnostics when returning diagnostic code ‘solver not applicable’
 - bisection can now be applied to sum-of-squares programs
 - Correct infeasibility/unboundedness flag returned from solvesos also when problem has been dualized.
 - Octave now works with fmincon