v9.50.0

ModelingToolkit v9.50.0

Diff since v9.49.0

Merged pull requests:

• fixing record from solution for observables in the BifurcationKit extension (#3161) (@vyudu)
• Implement initialize and finalize for symbolic callbacks (#3162) (@BenChung)
• fix: fix complete not properly expanding systems (#3168) (@AayushSabharwal)
• fix: support non-tunable parameters with DDEs (#3169) (@AayushSabharwal)
• fix: unpack components of the base sys in implicit extend (#3170) (@ven-k)
• CompatHelper: bump compat for SimpleNonlinearSolve to 2, (keep existing compat) (#3176) (@github-actions[bot])
• CompatHelper: bump compat for NonlinearSolve to 4, (keep existing compat) (#3177) (@github-actions[bot])
• CompatHelper: bump compat for NonlinearSolve to 4 for package docs, (keep existing compat) (#3178) (@github-actions[bot])
• Extend description and name in the same way (#3179) (@hersle)
• JumpSystem cleanup (#3180) (@isaacsas)
• fix: complete with split = false removes the index cache (#3184) (@AayushSabharwal)
• Rewrite perturbation example with Symbolics' new Taylor series functions (#3186) (@hersle)
• feat: add circular dependency checking, substitution limit (#3187) (@AayushSabharwal)
• add name of sys in show method (#3189) (@baggepinnen)
• build: bump version (#3191) (@AayushSabharwal)

Closed issues:

• Structural simplify broken for SDEs (#2614)
• Inifinite loop when solving an ODE with an unused NaN parameter (#3013)
• Guess for parameter not reflected in guesses of system (#3075)
• DDE handling gives error if tunable=false on parameters (#3165)
• @extend no longer works with components (#3167)
• Stream connector equations missing when used in subsystem (#3171)
• IntervalNonlinearSolve sometimes fails for externally registered functions (#3172)
• making SDESystem without using @mtkbuild (#3174)
• observed function broken on latest (#3183)
• Bad error reporting when guess is missing (#3185)