v1.9.0

MathOptInterface v1.9.0

Diff since v1.8.2

Closed issues:

• Bridges fail test_model_LowerBoundAlreadySet test (#1431)
• [Nonlinear] consider passing Nonlinear.Model to solvers (#1998)
• MOIU._single_variable_flag (#2005)
• MOI.FileFormats.MPS fails to read "dsbmip" from MIPLIB (#2006)
• FileFormats.MPS: Read/Write conic constraints from MPS files (#2013)
• FileFormats.MPS: indicator constraint support (#2014)
• FileFormats.MPS OBJSENSE (#2015)
• copy_to ignoring name because of too strict supports requirements (#2027)
• write_to_file and read_from_file fallbacks (#2028)

Merged pull requests:

• [Bridges] fix Constraint.ZeroOne bridge with existing bounds (#1879) (@odow)
• Add <:SUPPORTED_VARIABLE_SCALAR_SETS upper bound (#2007) (@pedromxavier)
• [Utilities] fix unsupported get in model.jl (#2008) (@odow)
• [FileFormats.MPS] fix reading of free rows (#2009) (@odow)
• [FileFormats.MPS] fix parsing of OBJSENSE (#2016) (@odow)
• Omit allocation test due to changes in sort on nightly (#2018) (@odow)
• [FileFormats.MPS] write OBJSENSE on new line, and loosen parsing rules (#2019) (@odow)
• [Nonlinear] remove recursion when parsing expressions (#2020) (@odow)
• Add fallback for ListOfConstraintIndices and NumberOfConstraints (#2021) (@odow)
• [FileFormats.MPS] add support for Indicator with EqualTo constraints (#2022) (@odow)
• [Nonlinear] add support for multivariate min and max operators (#2023) (@odow)
• [Test] add requires for test_constraint_get_ConstraintIndex (#2024) (@matbesancon)
• [FileFormats] add default fallback for read_from_file and write_to_file (#2029) (@odow)
• Prep for v1.9.0 (#2030) (@odow)