Consider a block describing a channel with two opposite walls.
Currently in order to grade the mesh towards the walls and have a
uniform region in the centre the channel would need to be spit into 3
blocks.  With the new multi/sectional grading this can be achieved in a
single block e.g.

blocks
(
    hex (0 1 2 3 4 5 6 7) (20 60 20)
    simpleGrading
    (
        1
        ((0.2 0.3 4) (0.6 0.4 1) (0.2 0.3 0.25))
        1
    )
);

In this example the block is divided uniformly in the x and z -directions
and split into three grading sections in the y-direction described by
three triples:  ((0.2 0.3 4) (0.6 0.4 1) (0.2 0.3 0.25)).  Each of the
grading sections is described by a triple consisting of the fraction of
the block, the fraction of the divisions and the grading ratio (size of
first division/size of last division).  Both the fraction of the block
and the fraction of the divisions are normalized automatically so they
can be specified scaled in anyway, e.g. as percentages:

blocks
(
    hex (0 1 2 3 4 5 6 7) (20 60 20)
    simpleGrading
    (
        1
        ((2 3 4) (6 4 1) (2 3 0.25))
        1
    )
);

and they need not sum to 1 or 100.

This is very new functionality and not well tested but backward
compatibility has been well tested so all existing blockMeshDicts should
parse correctly.

Causes problems if the controlDict contains # entries

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1507

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=416

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1505

in particular to pick-up the DebugSwitches from system/controlDict at
global construction time.

Disadvantage is that system/controlDict is only picked-up if the
OpenFOAM application is executed IN the case directory.  The directory
provided by the -case option is not yet known as the arguments have not
yet been parsed.

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=452

 Class
     Foam::className
 =>
 \\class Foam::className

 Class
     Foam::namespaceName::
         className
 =>
 \\class Foam::namespaceName::className

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=252

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1502

From https://github.com/OpenFOAM/OpenFOAM-2.2.x/pull/1

tutorials/incompressible/pimpleFoam/elipsekkLOmega: added non-orthogonal correctors to improve stability when running longer

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1432

src/TurbulenceModels/incompressible/turbulentTransportModels/RAS/kkLOmega: Corrected errors in implementation and from original paper according to
    Furst, J. (2013).
    Numerical simulation of transitional flows with laminar kinetic energy.
    Engineering MECHANICS, 20(5), 379-388.

Thanks to Jan-Niklas Klatt for analysing problems with and correcting
the implementation and testing corrections to the model proposed by
Furst.

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1501

This is as temporary fix pending the completion of the selectable thermal transport layer

term to the more commonly used form of Henkes, R.A.W.M., Van Der Vlugt, F.F. & Hoogendoorn, C.J. (1991).