Merge branch 'release/v0.7.0' into 'master'

CMakeLists.txt

packaging/icon256x256.png

src/CMakeLists.txt

src/data/data_manager.cpp

src/data/data_manager.hpp

src/data/graph.hpp

src/data/nodes/applied_bonus_points.cpp

src/data/nodes/applied_bonus_points.hpp

src/data/nodes/bonus_points.cpp

src/data/nodes/bonus_points.hpp

src/data/nodes/changed_max_points.cpp

src/data/nodes/changed_max_points.hpp

src/data/nodes/combined_grade_average.cpp

src/data/nodes/combined_grade_average.hpp

src/data/nodes/combined_grade_list.cpp

src/data/nodes/combined_grade_list.hpp

src/data/nodes/dynexite_exam.cpp

src/data/nodes/dynexite_exam.hpp

src/data/nodes/exam_stats.cpp

src/data/nodes/exam_stats.hpp