Rename all custom iterators to adhere to PascalCase naming convention for classes?

[Adda0]

We currently implement several custom iterator, all named as const_iterator, and iterator. It was suggested that we should rename them to ConstIterator and Iterator to adhere to our naming convention for classes, PascalCase. Is it possible if we want to keep all the iterator functionality in STL? Does anything expect classes to have exactly const_iterator and iterator types?

This includes Transitions::const_iterator, Moves::const_iterator, OrdVector::const_iterator, SparseSet::iterator, and more.

As far as I can tell, everything we now use should work as it currently does. However, there might be some issues later on, I am not sure about that. After some research, it seems to me that the name should hopefully not be relevant as far as supported functionality goes.