Merge pull request #1912 from CEED/jeremy/copyright

minor - update copyright to 2026

minor - update copyright to 2026

Merge pull request #1786 from CEED/jeremy/copy-headers

minor - upate copyright to 2025

minor - upate copyright to 2025

Merge pull request #1696 from CEED/jeremy/jit-include

JiT include update

qf - prefer ceed/types.h over ceed.h in qf source

Merge pull request #1557 from CEED/jrwrigh/diffusion_advection

fluids: Add diffusion to advection problem

fluids: Add diffusion to advection problem

Merge pull request #1543 from CEED/jrwrigh/explicit_stabilized_mass

Fluids: Add stabilized mass operator for advection problem

fluids: Add stabilized mass for advection

This enables "full" SUPG for the advection problem using explicit time
integrators

Merge pull request #1551 from CEED/jrwrigh/sycl_advection

fix(fluids): Allow advection to work with SYCL backends

fix(fluids): Allow advection to work with SYCL backends

Drop JiT Guards in Most QF Source (#1540)

* backend - use pragma once

* gallery - drop source header guards

* ex - drop some qfunction source header guards

* fluids - drop guards on all sin

Drop JiT Guards in Most QF Source (#1540)

* backend - use pragma once

* gallery - drop source header guards

* ex - drop some qfunction source header guards

* fluids - drop guards on all singly included headers

* jit - drop most guards on backend JiT files

* sycl - drop extra header guards

* jit - enable #pragma once for QF source

* fluids - use #pragma once for util/helper qf source

* test - check different multiple includes

* fluids - fix odd include

* jit - update interface for building JiT string from multiple files

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Merge pull request #1537 from CEED/jeremy/pragma-once

Use #pragma once for non-JiT headers

minor - update copyright headers

Merge pull request #1500 from CEED/jrwrigh/advection_typo

fix(fluids): RHS stabilization term should be negative

fix(fluids): RHS stabilization term should be negative

Merge pull request #1473 from CEED/jrwrigh/tau_choices

fluids: Shakib tau for advection

fluids: Add different tau choices for advection

Merge pull request #1447 from CEED/jrwrigh/unify_advection

fluids: Unify 2D and 3D Advection problems

fluids: Merge 2D and 3D advection setup

Instead of `-problem advection` and `-problem advection2d`, there's just
`-problem advection` and the dimensionality is taken from the dm.

fluids: Generalize advection boundary qfunctions

fluids: Generalize advection RHSFunction for 2d and 3d

fluids: Generalize advection IFunction for 2d and 3d

fluids: Generalize advection IC for 2d and 3d