This saves 1 instruction in getOrientation ;)

There is no requirement for the GeoLib::Point:
 - id is not used
 - name of the geo-object is not used.

The predicate is correct but slower than the homegrown solution.

The original initialization of the std::array's was by copy anyway
and somehow caused in seg faults on mac after adding c++17 standard.

Only in ERR/WARN/INFO/DBUG/OGS_FATAL and similar, not in
formatted output like xml files.

Otherwise there is a memory leak.

New versions of logog do not have an implicit ; after the macros.

1. Changed urls to https which fixed the following error:

xsd/OpenGeoSysGLI.xsd, at line 1, column 66: Document is not a XML schema.
Error XSDError in ..., at line 3, column 194: Loaded schema file is invalid.

If this error ever pops up again try to cut the internet connection! No joke!

2. Local schema files are now copied to bin-directory during CMake configuration and package generatiion (install step).

Sometimes the computed grid coordinates are to large which leads to memory errors.

Clang format run on near-the-header lines.

Happy New Year

* reimplemented raster to mesh conversion

* fixed index issues and added 3d index calculation

* added necessary changes to gui dialogue

* added tests

* clang format

* added ifdef for data explorer/vtk includes

* modified dereferencing of unique pointers, formatting

* changed pointer to vector in vtk prep

* using const& for nodes vec

* fixed remaining occurences of dereferencing raster object

Using tellg for size is not a portable idea.
The solution is from https://stackoverflow.com/a/116220.

To create correctely oriented mesh elements
(OGS-6 viewpoint) using gmsh the input polygon
is required to have ccw order.