Use consistent scientific notation in t323-basis.c

Use consistent scientific notation in t322-basis.c

Use consistent scientific notation in t321-basis.c

Add copyright statement to tests/t320-basis-f.h

Add copyright statement to tests/t320-basis.h

Operator - provide default impl of Composite Operators

Operator - Add OperatorApplyAdd, implement for CPU, OCCA backends

Use consistent scientific notation in t314-basis.c

Use consistent scientific notation in t313-basis.c

Use consisten scientific notation in t312-basis.c

Fix spacing in t312-basis.c

Use consisten scientific notation in t311-basis.c

Use consisten scientific notation in t310-basis.c

Better doc string for t303-basis.c

Tests - fix style in t001

Tests - remove extra output file

Tests - fix eval modes in t40* for clarity

Delegate AssembleLinearQF to ref/serial when not impl (#406)

* Operator - delegate AssembleLinearQF to ref/serial when not impl by backend

* Occa - Fix restriction summing error

* Tests - fix

Delegate AssembleLinearQF to ref/serial when not impl (#406)

* Operator - delegate AssembleLinearQF to ref/serial when not impl by backend

* Occa - Fix restriction summing error

* Tests - fix error in t534-f qfunction for CPU

* make style

* Operator - clarify fallback mechanism, allow backends to provide fallback other than /cpu/self/ref/serial

* Operator - update fallback to avoid copying vectors, restrictions

* Operator - move fallback to ceed level

* Operator - explicitly check for falling back to onself

* Update interface/ceed-operator.c

Co-Authored-By: Jed Brown <jed@jedbrown.org>

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Tests - add codecov markers

Operator/QFunction - Update view formatting

Operator - add OperatorView

QFunction - add QFunctionView

Operator - enable CEED_VECTOR_NONE as OperatorApply argument

Operator - add QFUNCTION_NONE

Basis - Use CEED_VECTOR_NONE for EVAL_MODE_WEIGHT