Please see the Extended Code Guide and header files for the details.

    ENH: add wall-function blending treatments to epsilonWallFunc
         adds `stepwise`, `max`, `binomial`, and `exponential` wall-function
         blending treatments:
    COMP: check backward compatibility for:
          `serial`
          `parallel`
          `serial restart`
          `parallel restart`
          computations in comparison to the following tutorials from v1906:
          `circuitBoardCooling  condensatingVessel  evaporationMultiComponent
           hotRoom  movingBox  multiRegionHeaterRadiation  reverseBurner
           solidQuenching2D`
    STYLE: simplify `forAll`s

    ENH: add new wall blending approaches into omegaWallFunction
         adds stepwise, max, binomial, and exponential wall function blending apprs.
         ensures/forces the backward compatibility:
           - blended = true    (blending:BINOMIAL2) (default)
           - blended = false   (blending:STEPWISE)
        simplifies forAlls
        deprecates objects:
           - "blended" - use "blending::" options
           - "includeG" - as was hardcoded

    ENH: add wall-func blending treatments into nutWallFuncs
    - nutWallFunction
    - nutUWallFunction
    - nutkWallFunction
    COMP: check backward compatibility for:
          - serial
          - parallel
          - serial restart
          - parallel restart
          computations in comparison to the following tutorials from v1906:
          - heatTransfer/buoyantSimpleFoam/buoyantCavity
          - compressible/rhoSimpleFoam/gasMixing/injectorPipe

    DOC: modify header docs in wallFuncs
    - nutUTabulatedWallFunction
    - nutUSpaldingWallFunction
    - nutURoughWallFunction
    - nutUBlendedWallFunction
      - REVERT: change write order
    - nutLowReWallFunction
    - kLowReWallFunction:
      - ENH: protect against zero-division error through 'Ceps2' entry
      - STYLE: remove few redundant empty lines

  - Improves header file documentations
  - Adds const specifier to various objects
  - Allows various model constants to be user-defined
  - Changes from lookupOrDefault() to getOrDefault()
  - Consistent namespace usage:
    - If the WF belongs to only Foam:: namespace, use Foam:: explicitly
    - If the WF belongs to more than one namespaces, put the WF in namespace
      parentheses
  - Adds the missing dashes in comments required by Doxygen
  - Corrects capitalisation in comments
  - The terminology 'viscous sublayer' was preferred over 'laminar sublayer'
    due to the fact that the sublayer is not laminar.
  - The order of initialisation of fields is changed to be the same across all.

- makes the intent clearer and avoids the need for additional
  constructor casting. Eg,

      labelList(10, Zero)    vs.  labelList(10, 0)
      scalarField(10, Zero)  vs.  scalarField(10, scalar(0))
      vectorField(10, Zero)  vs.  vectorField(10, vector::zero)

GeometricField: Renamed internalField() -> primitiveField() and dimensionedInternalField() -> internalField()

These new names are more consistent and logical because:

primitiveField():
primitiveFieldRef():
    Provides low-level access to the Field<Type> (primitive field)
    without dimension or mesh-consistency checking.  This should only be
    used in the low-level functions where dimensional consistency is
    ensured by careful programming and computational efficiency is
    paramount.

internalField():
internalFieldRef():
    Provides access to the DimensionedField<Type, GeoMesh> of values on
    the internal mesh-type for which the GeometricField is defined and
    supports dimension and checking and mesh-consistency checking.

in case of tmp misuse.

Simplified tmp reuse pattern in field algebra to use tmp copy and
assignment rather than the complex delayed call to 'ptr()'.

Removed support for unused non-const 'REF' storage of non-tmp objects due to C++
limitation in constructor overloading: if both tmp(T&) and tmp(const T&)
constructors are provided resolution is ambiguous.

The turbulence libraries have been upgraded and '-DCONST_TMP' option
specified in the 'options' file to switch to the new 'tmp' behavior.

nuSgsUSpaldingWallFunction removed, now use nutUSpaldingWallFunction

nuSgsUSpaldingWallFunction removed, now use nutUSpaldingWallFunction

This reverts commit c5bea524.

This reverts commit b18f6cc1.

eg,
    - makePatchTypeField -> makeTemplatePatchTypeField
    - makeNonTemplatedPatchTypeField -> makePatchTypeField

- space between keyword and bracket in 'for(..)', 'if(..)', 'while(..)'

 - names updated to reflect what they are based on, e.g. either k
   or U