1) BRepFill_Generator and BRepOffsetAPI_ThruSections now support 'non-destructive' mode for the input shapes (sections wires). The shape history of this algorithms also has been modified.
2) New test grids (based on the previous ones) have been added. These new cases use locked shapes as input arguments
3) The option '-safe' has been added to 'thrusections' command
- Added function checkprops, set default tolerance parameter to 1.0e-4
- Using "area" instead of "square".
- Options "-equal\notequal" isn't used together with "-s" in blend and offset test cases.
- Correct regressions/differences/improvements and CPU problem (set props tolerance to 0.1)
- Corrected test cases to use checkprops proc.
- Correct image difference
- Updated TODOs in test cases.
- Updated test cases to get correct images of result shape
