v9.17.0

ModelingToolkit v9.17.0

Diff since v9.16.0

Merged pull requests:

• Add initialization_equations flattening constructor (#2591) (@ChrisRackauckas)
• Fixes for dependent parameters (#2668) (@SebastianM-C)
• error for hybrid continuous/discrete systems (#2765) (@baggepinnen)
• feat: allow specifying variable names in modelingtoolkitize (#2768) (@AayushSabharwal)
• Remove unnecessary line in calculate_massmatrix function (#2771) (@bowenszhu)
• fix: fix build_explicit_observed_function for array parameter expressions (#2772) (@AayushSabharwal)
• Fix typos (#2773) (@ChrisRackauckas)
• Add propagation of guesses from parameters and observed (#2775) (@ChrisRackauckas)
• Fix accessing of defaults in BifurcationKit extensions (#2776) (@TorkelE)
• Fix unnecessary type specification in BK extension (#2777) (@TorkelE)
• Test parameters + defaults in initialization propagation (#2781) (@ChrisRackauckas)
• Only use the observed for simplification in MTKParameters construction (#2783) (@ChrisRackauckas)
• fix: avoid infinite loops in MTKParameters initialization (#2785) (@AayushSabharwal)

Closed issues:

• Cannot solve for dependent parameters during initialization (#2665)
• Remake fails with mixed variable and parameter defaults (#2715)
• Initialization systems don't support parametric guesses (#2716)
• ForwardDiff fails to differentiate ODE, due to type error between tspan and u0 (#2721)
• Pass state and parameter names etc. to modelingtoolkitize so the equations are easier to compare (#2736)
• getu with vector observed fails (#2767)
• New parameter type validation broke parameter splines (#2769)
• Cannot initialize unknown from observed that depends on parameter (#2774)