Tags from ModelingToolkit.jl

v5.21.0

2021-06-24T21:10:05Z

[Diff since v5.20.0](SciML/ModelingToolkit.jl@v5.20.0...v5.21.0)

**Closed issues:**
- No method matching operation(::Sym{Real, Nothing}) error during index reduction (SciML#998)
- KeyError running ODEProblem (SciML#1056)
- 'Freezing' time by setting initial time value (SciML#1063)
- Order of spring-mass-damper not lowered (SciML#1066)

**Merged pull requests:**
- Fixes for symbolic arrays change (SciML#989) (@shashi)
- CompatHelper: bump compat for "JuliaFormatter" to "0.14" (SciML#1007) (@github-actions[bot])
- Ensure explicit time-dependence for all ODESystem variables (SciML#1062) (@lamorton)
- Ensure independent variable is not in parameters (SciML#1064) (@lamorton)
- Limit vertical height of individual states and parameters (SciML#1067) (@bolognam)
- CompatHelper: bump compat for "SymbolicUtils" to "0.13" (SciML#1072) (@github-actions[bot])

v5.20.0

2021-06-18T10:02:35Z

[Diff since v5.19.1](SciML/ModelingToolkit.jl@v5.19.1...v5.20.0)

**Closed issues:**
- Allow generic array types in modelingtoolkitize (SciML#1009)
- inequality constraints? (SciML#1048)
- Accessing and referring to `ODESystem` states (SciML#1049)
- particle simulations; how to define forces which depend on several sub systems (SciML#1050)
- `ode_order_lowering` does nothing (SciML#1051)
- explicit handling of LabelledArrays (and NamedTuples?) (SciML#1054)

**Merged pull requests:**
- Generalize modelingtoolkitize to handle LabelledArrays (SciML#1055) (@ChrisRackauckas)

v5.19.1

2021-06-13T13:25:31Z

[Diff since v5.19.0](SciML/ModelingToolkit.jl@v5.19.0...v5.19.1)

**Closed issues:**
- Plotly plot is blank when plotting observed variable against another variable (SciML#1038)
- Error when creating JumpProblem from a ReactionSystem with keyword arguments (SciML#1042)

**Merged pull requests:**
- accept all kwargs to jumpsys (SciML#1043) (@isaacsas)

v5.19.0

2021-06-11T11:22:48Z

[Diff since v5.18.2](SciML/ModelingToolkit.jl@v5.18.2...v5.19.0)

v5.18.2

2021-06-09T20:57:58Z

[Diff since v5.18.1](SciML/ModelingToolkit.jl@v5.18.1...v5.18.2)

**Closed issues:**
- Require systems kwarg to all system types' constructors to have unique names (SciML#819)
- Nonlinear Problem sparse keyword error (SciML#1027)
- Help needed ...How to use bareiss! function from MTK ? (SciML#1029)
- Copy/Paste Bug in Exposing More Parallelism Documentation (SciML#1032)

**Merged pull requests:**
- Cache nonlinear solve jacobians (SciML#1030) (@ChrisRackauckas)
- Fix SciML#1032 (SciML#1033) (@YingboMa)
- Fix typo in runtests.jl message (SciML#1034) (@lamorton)
- Add checks for unique subsystem names. Fixes SciML#819. (SciML#1035) (@lamorton)
- Compute Jacobian sparsity when u0 is not provided (SciML#1036) (@YingboMa)