Uno v1.2.0 implements the following changes.
Features:
- support for fixed variables in the model (with identical lower and upper bounds). Uno provides dual variables for theses fixed variables, which should assist the user in performing sensitivity analysis (#45).
- default options are now hard-coded, therefore Uno can run without an option file (#28).
For AMPL users:
- the primal-dual solution (including bound duals) is now written to the .sol file with the same Lagrangian convention as IPOPT (#29, #40, #47).
For Julia users:
- Uno can now be installed automatically in Julia via Uno_jll.jl and used via AmplLNLWriter.jl.
- Uno_jll.jl is linked again a dummy HSL library (MA27, MA57). When you get an HSL license and install the proper HSL library, it is automatically linked to Uno_jll.jl (#44).
Bug fixes:
- MUMPS settings fixed to detect null pivots (and therefore singular matrices) (#68).
- default subproblem solvers and preset are set according to the available external libraries (#32, #43).
Uno now supports continuous integrations for unit tests, binary builds and numerical runs.