add custom TCLAP output which prints arguments in the order of addition
support gradual meshing in structured
fix a bug in generating lines
fix typo
format
fix clang warning
Fixed tetgen packaging on Mac OS.
[IO] Use vtkSmartPointer on construction.
[MGTL] Delete _mesh_nodes_along_surfaces in dtor too.
Merge pull request #540 from endJunction/FixMemoryLeaks

Fix memory leaks
Added some badges to the Readme.
Removes external code from Data Explorer class
[DE] Remove unused vars in RequestInformation().
[DE] Correct initialization order in SaveMeshDlg.
[ML] Comment unused function argument.
[IO] Remove unused variable.
ShapeLib: correct unsigned < 0 comparison.

Comparison of unsigned expression < 0 is always false.
Merge pull request #543 from rinkk/ColorTableFix

Removes external code from Data Explorer class
Merge pull request #541 from endJunction/ReduceCompilerWarnings

Reduce number of compiler warnings
Merge pull request #539 from norihiro-w/merge-gradual-meshing

Add gradual refinement feature to the structured mesh generator