v9.2.0

ModelingToolkit v9.2.0

Diff since v9.1.0

Merged pull requests:

• Fix up initializesystem for hierarchical models (#2403) (@ChrisRackauckas)
• docs: update docs for MTKv9 (#2489) (@AayushSabharwal)
• OptimizationSystem: Generate oop constraint derivatives (#2492) (@Vaibhavdixit02)
• Fix testing infrastructure (#2495) (@ChrisRackauckas)
• Update NEWS.md for DAE Initialization changes (#2503) (@ChrisRackauckas)

Closed issues:

• structural_simplify on an OptimizationProblem (#1565)
• Initial conditions via observed variables (#1836)
• Overridden default set on observed quantity not propagating to its alias (#1968)
• How to prevent breakage from changes to structural_simplify (#2000)
• substitute(::ODESystem) does not substitute in events (#2059)
• Compute initial states for u0 if u0 is parametric (#2103)
• Advanced initialization (#2151)
• WARNING: importing deprecated binding Symbolics.@register into ModelingToolkit. (#2197)
• Pretty printing list of parameters. (#2481)