Merge MR !125, 'jrwrigh/fix_qf_char_arrays', into 'main'

fix: Move enum strings to compilation units

See merge request phypid/honee!125

fix: Move enum strings to compilation units

Merge MR !123, 'jrwrigh/qf_char_arrays', into 'main'

feat: Move PetscOptionEnum char arrays to enum defs in QF files

See merge request phypid/honee!123

feat: Move PetscOptionEnum char arrays to enum defs in QF files

Merge MR !72, 'jrwrigh/jit_changes', into 'main'

fix: Change QFunctions to account for libCEED#1696

See merge request phypid/honee!72

fix: Change QFunctions to account for libCEED#1696

Merge MR !70, 'jrwrigh/advection_bl_outflow_height', into 'main'

feat: Add `-bl_height_factor` option

See merge request phypid/honee!70

feat(advdif): Add bl_height_factor option

Merge MR !46, 'jrwrigh/advection_BL', into 'main'

feat(advdif): Add Boundary Layer IC

See merge request phypid/honee!46

feat(advdif): Add Boundary Layer IC, wind type

Merge MR !43, 'jrwrigh/advection_div_diff_flux', into 'main'

Implement DivDiffFluxProjection for advection diffusion

See merge request phypid/honee!43

feat(advdif): Add div F_diff into IFunction

Merge MR !42, 'jrwrigh/advection_diff_tau', into 'main'

advdif: Add diffusion component to tau

See merge request phypid/honee!42

feat(advdif): Add diffusion tau coefficient

Merge MR !38, 'jrwrigh/advdif_sine_wave', into 'main'

feat(advdiff): Add sine and square wave ICs

See merge request phypid/honee!38

style(advdif): Add prefix to typedef enums

feat(advdif): Add sine and square wave IC

Merge branch 'jrwrigh/license_changes' into 'main'

Update License post libCEED fork

See merge request phypid/honee!6

chore: Move to Apache-2.0 OR BSD-2-Clause

fluids: Add diffusion to advection problem

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

fluids: Add different tau choices for advection

fluids: Convert strong_form to boolean in advection