Implement dynamic offsets in field resolution #8
Description
A variable used as an offset, e.g., list::elements(list::size) is referred to as a dynamic offset. This is represented as elements_$0 in the path, where 0 is the index of the child node representing the variable. Currently these dynamic offsets are ignored, however they of course still need to be implemented. One place they are ignored in, is in ResolveField in the SymbolTable class.