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@jsiirola jsiirola released this 30 Nov 03:01
· 3879 commits to main since this release
6.7.0
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Highlights of the 6.7 release series

  • Added support for Python 3.12
  • Removed support for Python 3.7
  • New writer for converting linear models to matrix form
  • New packages:
    • latex_printer (print Pyomo models to a LaTeX compatible format)
  • ...and of course numerous minor bug fixes and performance enhancements

Changes in this release

  • General
    • Remove Python 3.7, add Python 3.12 Support (#3050, #2956)
    • Update report_timing() to support context manager API (#3039)
    • Add Preformatted class for logging preformatted messages (#2998)
    • QuadraticRepnVisitor: Improve nonlinear expression expansion (#2997)
    • Add CITATION file to main repository (#2992)
    • Minor typo / formatting fixes (#3010, #2975)
  • Core
    • Fix exception from interaction of Gurobi, Pint, Dask, and Threading (#3026)
    • Fix differentiation of Expressions with native_numeric_types (#3017)
    • Warn for explicit declaration of immutable params with units (#3004)
    • Use SetInitializer for initializing Param domains; reinitializing
      IndexedVar domains (#3001)
    • Ensure templatize_constraint returns an expression (#2983)
    • Prevent multiple applications of the scaling transform (#2979)
  • Solver Interfaces
    • Remove presolve-eliminated variables from named expressions (#3056)
    • Improve LP/NL writer determinism (#3054)
    • Add "writer" for converting linear models to standard matrix form (#3046)
    • NLv2/LPv2: Log which suffix values were skipped at the DEBUG level (#3043)
    • NLv2: add linear presolve and general problem scaling support (#3037)
    • Adjust mps writer format for integer variable declaration (#2946)
    • Fix scip results processing (#3023)
    • Fix quadratic objective off-diagonal-terms in cplex_direct interface (#3025)
    • Consolidate walker logic in LP/NL representations (#3015)
    • LP writer: warn user for ignored suffixes (#2982)
    • Update handling of 0* in linear, quadratic walkers (#2981)
  • Testing
    • Pin gurobipy version for testing to 10.0.3 (#3053)
    • Update Performance Plot URL (#3033)
    • Track change in Black rules (#3021)
    • Resolve build infrastructure errors (with mpi4py, gams, networkx) (#3018)
    • Improve GHA conda env package setup (#3013, #2967)
    • Update Gurobi license checks in tests (#3011)
    • Skip fileutils test failure that persists in OSX 12.7 (#3008)
    • LINTING: New Version of crate-ci/typos (#2987)
  • GDP
    • Improve Disjunction construction error for invalid types (#3042)
    • Adding new walker for compute_bounds_on_expr (#3027)
    • Fix bugs in gdp.bound_pretransformation (#2973)
    • Fix various bugs in GDP transformations (#3009)
    • Add a few more GDP examples (#2932)
  • Contributed Packages
    • APPSI: Add interface to WNTR (#2902)
    • APPSI: Capture HiGHS output when initializing model (#3005)
    • APPSI: Fix auto-update when unfixing variable and changing bounds (#2996)
    • APPSI: Fix reference bug in HiGHS interface (#2995)
    • FBBT: Add new walker for compute_bounds_on_expr (#3027)
    • incidence_analysis: Fix bugs with subset ordering and 0 coefficients (#3041)
    • incidence_analysis: Update paper reference (#2969)
    • latex_printer: Add contrib.latex_printer package (#2984)
    • MindtPy: Add support for GreyBox models (#2988)
    • parmest: Cleanup examples and tests (#3028)
    • PyNumero: Handle evaluation errors in CyIpopt solver (#2994)
    • PyROS: Report relative variable shifts in solver logs (#3035)
    • PyROS: Update logging system (#2990)
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