Misc doc merge updates

[TorkelE]

Does stuff like adding in the (@ref ref) entries (only possible now when (almost) all docs are in place).

[ChrisRackauckas]

Note that because of the Windows chaos, DiffEq is required on Windows at least until a Julia v1.10.4 is released.

[TorkelE]

I was going to keep it for now, but then I had incompatibilities with other SciML stuff that I couldn't sort out, and since it was due for an exit I dropped it:

ERROR: Unsatisfiable requirements detected for package ADTypes [47edcb42]:
 ADTypes [47edcb42] log:
 ├─possible versions are: 0.1.0-1.2.1 or uninstalled
 ├─restricted by compatibility requirements with NonlinearSolve [8913a72c] to versions: 1.1.0-1.2.1
 │ └─NonlinearSolve [8913a72c] log:
 │   ├─possible versions are: 0.1.0-3.12.2 or uninstalled
 │   └─restricted to versions 3.12.0-3 by an explicit requirement, leaving only versions: 3.12.0-3.12.2
 └─restricted by compatibility requirements with BoundaryValueDiffEq [764a87c0] to versions: 0.2.0-0.2.7 — no versions left
   └─BoundaryValueDiffEq [764a87c0] log:
     ├─possible versions are: 2.0.0-5.7.1 or uninstalled
     ├─restricted by compatibility requirements with NonlinearSolve [8913a72c] to versions: [2.0.0-2.11.0, 5.6.0-5.7.1] or uninstalled
     │ └─NonlinearSolve [8913a72c] log: see above
     ├─restricted by compatibility requirements with DifferentialEquations [0c46a032] to versions: 5.0.0-5.7.1, leaving only versions: 5.6.0-5.7.1
     │ └─DifferentialEquations [0c46a032] log:
     │   ├─possible versions are: 5.0.0-7.13.0 or uninstalled
     │   ├─restricted to versions * by an explicit requirement, leaving only versions: 5.0.0-7.13.0
     │   ├─restricted by compatibility requirements with LinearSolve [7ed4a6bd] to versions: [5.0.0-6.20.0, 7.8.0-7.13.0] or uninstalled, leaving only versions: [5.0.0-6.20.0, 7.8.0-7.13.0]
     │   │ └─LinearSolve [7ed4a6bd] log:
     │   │   ├─possible versions are: 0.1.0-2.30.1 or uninstalled
     │   │   └─restricted to versions 2.30.0-2 by an explicit requirement, leaving only versions: 2.30.0-2.30.1
     │   ├─restricted by compatibility requirements with NonlinearSolve [8913a72c] to versions: [5.0.0-7.6.0, 7.12.0-7.13.0] or uninstalled, leaving only versions: [5.0.0-6.20.0, 7.12.0-7.13.0]
     │   │ └─NonlinearSolve [8913a72c] log: see above
     │   └─restricted by compatibility requirements with OrdinaryDiffEq [1dea7af3] to versions: 6.21.0-7.13.0 or uninstalled, leaving only versions: 7.12.0-7.13.0
     │     └─OrdinaryDiffEq [1dea7af3] log:
     │       ├─possible versions are: 4.0.0-6.80.0 or uninstalled
     │       └─restricted to versions 6.80.0-6 by an explicit requirement, leaving only versions: 6.80.0
     └─restricted by compatibility requirements with DiffEqBase [2b5f629d] to versions: [2.3.0-5.6.0, 5.6.2-5.7.1] or uninstalled, leaving only versions: [5.6.0, 5.6.2-5.7.1]
       └─DiffEqBase [2b5f629d] log:
         ├─possible versions are: 3.13.2-6.151.2 or uninstalled
         ├─restricted to versions 6.83.0-6 by Catalyst [479239e8], leaving only versions: 6.83.0-6.151.2
         │ └─Catalyst [479239e8] log:
         │   ├─possible versions are: 13.5.1 or uninstalled
         │   └─Catalyst [479239e8] is fixed to version 13.5.1
         ├─restricted by compatibility requirements with ModelingToolkit [961ee093] to versions: 6.103.0-6.151.2
         │ └─ModelingToolkit [961ee093] log:
         │   ├─possible versions are: 0.0.1-9.15.0 or uninstalled
         │   ├─restricted to versions 9.11.0-9 by Catalyst [479239e8], leaving only versions: 9.11.0-9.15.0
         │   │ └─Catalyst [479239e8] log: see above
         │   └─restricted to versions 9.15.0-9 by an explicit requirement, leaving only versions: 9.15.0
         ├─restricted by compatibility requirements with JumpProcesses [ccbc3e58] to versions: 6.148.0-6.151.2
         │ └─JumpProcesses [ccbc3e58] log:
         │   ├─possible versions are: 9.0.0-9.11.1 or uninstalled
         │   ├─restricted to versions 9.3.2-9 by Catalyst [479239e8], leaving only versions: 9.3.2-9.11.1
         │   │ └─Catalyst [479239e8] log: see above
         │   └─restricted to versions 9.11.0-9 by an explicit requirement, leaving only versions: 9.11.0-9.11.1
         ├─restricted by compatibility requirements with NonlinearSolve [8913a72c] to versions: 6.149.0-6.151.2
         │ └─NonlinearSolve [8913a72c] log: see above
         └─restricted by compatibility requirements with SciMLSensitivity [1ed8b502] to versions: 6.151.1-6.151.2
           └─SciMLSensitivity [1ed8b502] log:
             ├─possible versions are: 7.0.0-7.59.0 or uninstalled
             └─restricted to versions 7.59.0-7 by an explicit requirement, leaving only versions: 7.59.0

[TorkelE]

Superseded by #884