v3.2.0

ModelingToolkit v3.2.0

Diff since v3.1.1

Closed issues:

• More simplification routines (#55)
• Replace Expression abstract type with a union type for union splitting optimizations (#68)
• Formalism around models (#91)
• Clean up ode_order_lowering (#115)
• Catlab.Formula as a potential application of MT (#138)
• Roadmap questions (#165)
• Tree flattening (#166)
• Please add example ODE to README.md (#185)
• Please improve motivation in README.md (#186)
• Hessian fails with sin (#192)
• vars() function when the operation is a variable (#211)
• Bug in MTK.simplify_constant (#226)
• Inconsistent types from MTK+DI (#228)
• Simplification plan (#230)
• JumpSystem design discussion (#307)
• How to connect two ODEs? (#315)
• Link to stable documentation is broken (#325)
• Error in High Level Example from GitHub front page (#327)
• Link to SymbolicUtils Substitution (#339)

Merged pull requests:

• Remove index reduction (#310) (@YingboMa)
• JumpSystems for constant and variable rate jumps (#317) (@isaacsas)
• SymbolicUtils integration (#326) (@shashi)
• CompatHelper: bump compat for "SymbolicUtils" to "0.2" (#329) (@github-actions[bot])
• Allow reactions with: Multiple copies of one components and either no substrates or no products (#330) (@TorkelE)
• SDEProblem from SDESystem fix (#332) (@isaacsas)
• default to iip for SDEProblems (#333) (@isaacsas)
• CompatHelper: add new compat entry for "DiffEqJump" at version "6.6" (#334) (@github-actions[bot])
• add DiscreteProblem with u0/param maps (#335) (@isaacsas)
• add mass action jump support (#336) (@isaacsas)
• substitute using SymbolicUtils (#342) (@ChrisRackauckas)
• CompatHelper: bump compat for "UnPack" to "1.0" (#345) (@github-actions[bot])

v3.1.1

ModelingToolkit v3.1.1

Diff since v3.1.0

v3.1.0

ModelingToolkit v3.1.0

Diff since v3.0.2

Closed issues:

• EOF Error while importing ModelingToolkit (#221)
• generate_jacobian returns expression not function (#323)

Merged pull requests:

• Set push_preview=true in makedocs (#314) (@asinghvi17)
• Splat kwargs in generate_jacobian for nonlinear system (#324) (@ChrisRackauckas)

v3.0.2

ModelingToolkit v3.0.2

Diff since v3.0.1

Merged pull requests:

• fix empty reduce issue (#313) (@wupeifan)

v3.0.1

ModelingToolkit v3.0.1

Diff since v3.0.0

Closed issues:

• ode_order_lowering state ordering is incorrect (#308)

Merged pull requests:

• Pantelides algorithm (#285) (@YingboMa)
• Patch 1 (#301) (@ArnoStrouwen)
• update NonlinearSystem docs (#302) (@ArnoStrouwen)
• automatic symbol conversions (#303) (@ChrisRackauckas)
• treat symbols symbolically when converting from expressions (#304) (@adediego)
• Generate a full list of vars in ode_order_lowering (#309) (@YingboMa)

v3.0.0

ModelingToolkit v3.0.0

Diff since v2.0.0

Closed issues:

• Unpacking Additional Arguments (#260)
• Handle reaction combinatorics (#261)
• Support for arrays of arrays datastructures in output (#262)

Merged pull requests:

• Setup ReactionSystem on AbstractSystem interface (#284) (@ChrisRackauckas)
• Generalize LaTeXify for AbstractSystem (#287) (@ChrisRackauckas)
• add ODE ratelaw expressions (#289) (@isaacsas)
• add a direct problem building interface for AbstractSystems (#290) (@ChrisRackauckas)
• Expose sparse matrix generation in higher level prob constructors (#291) (@ChrisRackauckas)
• CompatHelper: add new compat entry for "ArrayInterface" at version "2.8" (#292) (@github-actions[bot])
• [WIP] Add Documentation (#293) (@ChrisRackauckas)
• More reasonable transformation variable names (#294) (@ChrisRackauckas)
• Add lowering integration test (#295) (@ChrisRackauckas)
• fix composed expression generation (#296) (@ChrisRackauckas)
• Generalize build_function (#298) (@ChrisRackauckas)
• Allow arrays of arrays of stuff in iip build_function (#299) (@ChrisRackauckas)
• CompatHelper: add new compat entry for "UnPack" at version "0.1" (#300) (@github-actions[bot])

v2.0.0

ModelingToolkit v2.0.0

Diff since v1.5.0

v1.5.0

ModelingToolkit v1.5.0

Diff since v1.4.3

Closed issues:

• Components (#36)
• Variable uniqueness (#89)
• Too many small files in the src folder (#114)
• Support mass matrices on ODESystem (#120)
• Detecting Operations that are Variables (#130)
• Reaction Network DSL in modeling toolkit / new equation types (#143)
• Inconsistent Differential across Julia versions. (#152)
• Short term milestones (#206)
• Semantic Difference b/t Variables and Parameters (#212)
• Naming, Laziness, and Ordering (#214)
• Type validation (#271)
• Flattening removes Variable typing (#276)
• Latexify needs to be updated to new ODESystem (#279)

Merged pull requests:

• Add new systems types in support of DiffEqBiological.jl (#251) (@ChrisRackauckas)
• Remove ODEExpr (#263) (@ChrisRackauckas)
• Add a component system (#265) (@ChrisRackauckas)
• CompatHelper: add new compat entry for "TreeViews" at version "0.3" (#266) (@github-actions[bot])
• Fix calculated functions on components (#267) (@ChrisRackauckas)
• Make variables typed and use types for auto-detection (#268) (@ChrisRackauckas)
• add unit validation of equations (#273) (@ChrisRackauckas)
• CompatHelper: add new compat entry for "Unitful" at version "1.1" (#274) (@github-actions[bot])
• add dot syntax, variable searching in scope, and variable->operation (#277) (@ChrisRackauckas)
• Refactor to AbstractSystem interface and create OptimizationSystem (#278) (@ChrisRackauckas)
• Add and test automatic multithreading (#280) (@ChrisRackauckas)
• CompatHelper: add new compat entry for "SafeTestsets" at version "0.0.1" (#282) (@github-actions[bot])
• fix latexification (#283) (@ChrisRackauckas)

v1.4.3

ModelingToolkit v1.4.3

Diff since v1.4.2

Closed issues:

• Determinants (#258)

Merged pull requests:

• Overload det (#259) (@ChrisRackauckas)

v1.4.2

ModelingToolkit v1.4.2

Diff since v1.4.1