ENH: Added arrow types to sources.xml
ENH: vtkAbstractArray is now able to create a vtkVariantArray.
ENH: Updated vtkSelection::Union to handle multiple-column selections.
BUG: Fixing string overrun in vtkAssignAttribute.
ENH: Adding progress to vtkConvertSelection.
ENH: Adding EdgeArrow type to vtkGlyphSource2D.
BUG: vtkKdTreeSelector now always uses the specified array name in the output.
ENH: Adding convenience method to set the vertex from a string.
ENH: In vtkExtractSelectedGraph, use vtkConvertSelection to convert to an index selection.
ENH: In vtkThresholdTable, make comparison inclusive.
ENH: Adding support for vtkVariantArray in vtkDataReader/Writer.