v9.10.0

ModelingToolkit v9.10.0

Diff since v9.9.0

Merged pull requests:

• refactor: use the t defined in the module (#2569) (@ven-k)
• Handle derivatives of observed variables (#2574) (@ChrisRackauckas)
• fix: fix hierarchical discrete systems (#2593) (@AayushSabharwal)
• fix: fix namespacing of defaults and equations (#2594) (@AayushSabharwal)
• Revert "fix: fix namespacing of defaults and equations" (#2595) (@ChrisRackauckas)
• Change wording from initial guess to initial condition (#2598) (@baggepinnen)
• docs: add tutorial for optimizing ODE solve and remake (#2600) (@AayushSabharwal)
• Accessors for differential and algebraic erquations (#2601) (@TorkelE)
• Support docstrings for @connectors and @components (#2602) (@devmotion)
• fix: fix callback codegen, observed eqs with non-scalarized symbolic arrays (#2605) (@AayushSabharwal)
• refactor: improve replace, remake_buffer (#2610) (@AayushSabharwal)
• feat: improve error messages for missing variables and subsystems (#2617) (@AayushSabharwal)
• Revert "feat: improve error messages for missing variables and subsystems" (#2620) (@YingboMa)
• Revert "feat: improve error messages for missing variables and subsystems" (#2622) (@ChrisRackauckas)
• Fix a minor issue in generate_initializesystem (#2627) (@YingboMa)

Closed issues:

• Indexing and dot-assignment of parameters/variables in nested systems (#892)
• Identity matrix multiplied by z[3:4] gives z[1:2] (#1099)
• Missing heuristic for array variables (#1283)
• Problem when defining Vector variables in connectors (#1432)
• Default initial conditions trigger an error when composing connections using scalarize() (#1553)
• "Axes of broadcast not known" with differential matrix equation (#1740)
• Error when taking inverse of matrix parameters, missing * method (#2134)
• continuous_events fails to recognize vectors (#2383)
• Error in alias elimination of DiscreteSystem (#2585)
• Cannot use micro moles units. (#2590)
• guess not used (#2596)
• Callback function generation error (#2599)