ENH: Script to generate API differences between two git revisions
ENH: Script to generate API differences between two git revisions

The script uses git and ctags to generate a list of classes and public
methods added/removed.
It also lists newly deprecated methods.
The flag --wikiOutput can be used to print the report with wiki markup.

Change-Id: I12a9df100099527599aa5762540e01bd09460c0b

keithroe/vtkoptix,SimVascular/VTK,berendkleinhaneveld/VTK,jmerkow/VTK,SimVascular/VTK,jmerkow/VTK,hendradarwin/VTK,ashray/VTK-EVM,candy7393/VTK,msmolens/VTK,berendkleinhaneveld/VTK,jmerkow/VTK,mspark93/VTK,jmerkow/VTK,sumedhasingla/VTK,sumedhasingla/VTK,candy7393/VTK,johnkit/vtk-dev,keithroe/vtkoptix,sumedhasingla/VTK,berendkleinhaneveld/VTK,sankhesh/VTK,sankhesh/VTK,msmolens/VTK,msmolens/VTK,ashray/VTK-EVM,keithroe/vtkoptix,demarle/VTK,johnkit/vtk-dev,berendkleinhaneveld/VTK,sankhesh/VTK,gram526/VTK,demarle/VTK,gram526/VTK,berendkleinhaneveld/VTK,ashray/VTK-EVM,gram526/VTK,demarle/VTK,SimVascular/VTK,demarle/VTK,hendradarwin/VTK,sumedhasingla/VTK,candy7393/VTK,ashray/VTK-EVM,sumedhasingla/VTK,ashray/VTK-EVM,gram526/VTK,SimVascular/VTK,demarle/VTK,mspark93/VTK,mspark93/VTK,johnkit/vtk-dev,hendradarwin/VTK,johnkit/vtk-dev,sankhesh/VTK,sankhesh/VTK,sankhesh/VTK,sumedhasingla/VTK,msmolens/VTK,candy7393/VTK,msmolens/VTK,berendkleinhaneveld/VTK,candy7393/VTK,candy7393/VTK,sumedhasingla/VTK,johnkit/vtk-dev,gram526/VTK,mspark93/VTK,SimVascular/VTK,sankhesh/VTK,berendkleinhaneveld/VTK,ashray/VTK-EVM,keithroe/vtkoptix,demarle/VTK,jmerkow/VTK,ashray/VTK-EVM,jmerkow/VTK,keithroe/vtkoptix,SimVascular/VTK,sankhesh/VTK,keithroe/vtkoptix,johnkit/vtk-dev,mspark93/VTK,mspark93/VTK,jmerkow/VTK,mspark93/VTK,SimVascular/VTK,keithroe/vtkoptix,msmolens/VTK,candy7393/VTK,gram526/VTK,hendradarwin/VTK,ashray/VTK-EVM,msmolens/VTK,msmolens/VTK,demarle/VTK,mspark93/VTK,gram526/VTK,hendradarwin/VTK,SimVascular/VTK,keithroe/vtkoptix,gram526/VTK,jmerkow/VTK,candy7393/VTK,hendradarwin/VTK,demarle/VTK,sumedhasingla/VTK,hendradarwin/VTK,johnkit/vtk-dev