Better commentation of classes and functions
Althought the code is very easy to read and most a little more complicated lines of code are commented, its kind of hard to get the bigger connection in the code. Sometimes when i look for something, i dont need to know how a class or function works internally, its enough to know what it does. But since there are no information for most of the classes and functions, i need to read them to get the hole context.
Maybe this is just because i am not used to C++ but in general it might be an good idea to add some comments at least for new code to make it easier in the future to get into the code base.