Merging of cell sets
Merging of cell sets (cell arrays and cell data arrays) introduced as a new module MergeCellSets and as (default) options for ANSYS Fluent and UCD reader. When cell data arrays occuring only in selected cell sets are merged, zeros are added for remaining cell set positions. Additionally, Planar Slice, Streamlines and Animated Stream modules is to be removed.
Fixes problems with multi cell set indexing in ANSYS Fluent reader (fixes #106 (closed)).