test and tutorials depend on option flags
Merge branch 'FlorianRudolf/feature-TDR-reader'
Merge branch 'FlorianRudolf/feature-documentation'
Merge branch 'FlorianRudolf/fix-compiler-errors-and-warnings'
apidoc depends on pyviennamesh (if enabled)
added installation for PyViennaMesh
triangle_make_mesh and tetgen_make_mesh depend on options, added installation for tools
added installation, added pictures
added conversion string to dynamic point, added query for algorithm factory, fixed requirement behaviour
added algorithm query for algorithm factory
fix bug for meshes without segments
updated information (netgen does not need any external library any more, update licenses, ...)
PyViennaMesh default off, fixed dist target, removed BUILD_DOXYGEN_DOC (is included in BUILD_MANUAL)
build directory is present in dist
currently there are only 2 (documented) ways to use ViennaMesh
new examples
removed features
moved string tools implementation to own cpp, added conversion from string to seed point container, string-string map and point container
removed image TODOs
added string-string-map, added conversion from string