v10.26.1

ModelingToolkit v10.26.1

Diff since v10.26.0

Merged pull requests:

• CompatHelper: bump compat for Optimization to 5 for package docs, (keep existing compat) (#3966) (@github-actions[bot])
• Handle split in linearize_symbolic (#3968) (@baggepinnen)
• refactor: remove dead code calling explicitfun in SCCNonlinearProblem (#3980) (@AayushSabharwal)
• build: bump patch version (#3982) (@AayushSabharwal)

Closed issues:

• ModelingToolkit can't find a variable its knows as an unkown (#3964)

v10.26.0

ModelingToolkit v10.26.0

Diff since v10.25.0

Merged pull requests:

• fix: fix ODEProblem construction during precompilation with eval_expression = true (#3957) (@AayushSabharwal)
• fix: unwrap inputs/outputs in System constructor (#3960) (@vyudu)
• fix: retain inputs when compose (#3961) (@vyudu)
• Simply fractional_to_ordinary.jl tests with using OrdinaryDiffEq radau5 (#3963) (@ChrisRackauckas)
• build: bump minor version (#3967) (@AayushSabharwal)

Closed issues:

• inputs lost when composing systems? (#3943)

v10.25.0

ModelingToolkit v10.25.0

Diff since v10.24.0

Merged pull requests:

• Update FAQ.md: add link to Basic Example on Optimization (#3955) (@bgctw)
• Backport #3843 (support of ForwardDiff@1) to MTK@9 (#3958) (@devmotion)
• Add DataStructures v0.17-v0.19 compatibility with version branching (#3959) (@ChrisRackauckas-Claude)

Closed issues:

• Cannot install latest ModelingToolkit release (#3951)

v9.83.0

ModelingToolkit v9.83.0

Diff since v9.82.0

This release has been identified as a backport.
Automated changelogs for backports tend to be wildly incorrect.
Therefore, the list of issues and pull requests is hidden.

v10.24.0

ModelingToolkit v10.24.0

Diff since v10.23.0

Merged pull requests:

• Improve Printing of Uninitialized Variables (#3920) (@DhairyaLGandhi)
• Copy parameter object before setting in subset_tunables (#3922) (@DhairyaLGandhi)
• CompatHelper: bump compat for SymbolicUtils to 4, (keep existing compat) (#3945) (@github-actions[bot])
• CompatHelper: bump compat for SymbolicUtils to 4 for package docs, (keep existing compat) (#3946) (@github-actions[bot])
• Revert "CompatHelper: bump compat for SymbolicUtils to 4, (keep existing compat)" (#3947) (@ChrisRackauckas)
• Fix Jacobian sparsity pattern with observed derivatives (#3949) (@hersle)

Closed issues:

• Sparse ODE segfaults when RHS contains differentiated variable (#3871)
• FMU variable names cannot be typed (#3913)
• subset_tunables seems to modify the system in-place (#3921)

v10.23.0

ModelingToolkit v10.23.0

Diff since v10.22.0

Merged pull requests:

• Transformation function to turn FDEs into ODEs (#3776) (@fchen121)
• Allow system level metadata information (#3892) (@DhairyaLGandhi)
• Remove draft mode from documentation (#3933) (@hersle)
• CompatHelper: add new compat entry for OptimizationOptimJL at version 0.4 for package docs, (keep existing compat) (#3936) (@github-actions[bot])
• CompatHelper: add new compat entry for Optimization at version 4 for package docs, (keep existing compat) (#3937) (@github-actions[bot])
• Use matrix-dependent solver for sparse analytical Jacobian example (#3938) (@hersle)
• fix: fix sparse cost hessian (#3940) (@AayushSabharwal)
• build: bump minor version (#3941) (@AayushSabharwal)

Closed issues:

• Permit ComponentArrays as simulation condition (u0 + ps) (#3926)
• Documentation is built in draft mode and does not show example block output (#3932)

v10.22.0

ModelingToolkit v10.22.0

Diff since v10.21.0

Merged pull requests:

• fix: use improved discrete saving API (#3901) (@AayushSabharwal)
• build: bump minor version (#3918) (@AayushSabharwal)

Closed issues:

• ERROR: LoadError: Internal Error. Please open an issue with an MWE. (#3835)
• respecialize always promotes Float16 and Float32 to Float64 (#3908)
• Precompile Issue [?SomePackage] (#3909)
• ForwardDiff on ODE with callback crashes (#3914)

v10.21.0

ModelingToolkit v10.21.0

Diff since v10.20.0

Merged pull requests:

• feat: more robust inputs/outputs handling (#3795) (@AayushSabharwal)
• feat: add respecialize (#3900) (@AayushSabharwal)
• build: bump minor version (#3904) (@AayushSabharwal)

v10.20.0

ModelingToolkit v10.20.0

Diff since v10.19.0

Merged pull requests:

• Updated tests for the new behaviour of SymbolicUtils simplify function (#3893) (@Bumblebee00)
• fix: fix callback with non-Real parameter and non-empty unknowns (#3894) (@AayushSabharwal)
• feat: ensure causal connectors generate causally ordered equations (#3898) (@AayushSabharwal)
• build: bump minor version (#3899) (@AayushSabharwal)

v10.19.0

ModelingToolkit v10.19.0

Diff since v10.18.0

Merged pull requests:

• Fix cache issues with self-hosted runners (#3879) (@ChrisRackauckas-Claude)
• chore: add change_tunables (#3886) (@DhairyaLGandhi)
• Add missing API documentation for all exported symbols (#3887) (@ChrisRackauckas-Claude)
• test: avoid intermittent stack overflow in test (#3889) (@AayushSabharwal)
• fix: fix simplification of empty systems (#3890) (@AayushSabharwal)

Closed issues:

• Observed variables are computed even when unused (#2902)
• Allow subsetting tunables after system creation (#3772)