- resolve existing and new warnings on MSVC

- remove unused includes
- change deprecated includes
- change to system include when needed

Signed-off-by: schroedtert <t.schroedter@fz-juelich.de>

Signed-off-by: schroedtert <t.schroedter@fz-juelich.de>

+ some comments

- Removed spacer from messagebox which caused the segmentation fault
- Corrected indentation of the function

- changed LICENSE to match GPLv3
- add license header to project source files
- add note to license to ReadMe.md

Signed-off-by: t.schroedter <t.schroedter@fz-juelich.de>

Signed-off-by: Schrödter, Tobias <t.schroedter@fz-juelich.de>

d.kilic authored 4 years ago and Schrödter, Tobias committed 4 years ago

- Migrate build system from qmake to cmake
- Add catch2 and trompeloeil
- Update to CI to execute unit tests
- minor fixes of depreacation and warnings
- Color can be selected by clicking on the specific hat

Ref #1