added support for limitless depth + updated TODO.txt
leaks: minor fixes in Problem
fixing leaks & refactoring:
	Relation: pairs is now a pointer that gets passed around and deleted when it is no longer needed; as a side effect, this has apparently reduced the amount of leaked memory
	Strategy family: removed the reset() method: they are not used anywhere
	recap.ods: ???
use same starting point:
	first draft
	updated TODO list
-sameStartingPoint is now working
new batch of results