more work on Insert:
	expanded existing Insert class
	wrote insert utility function
	tested it
	added test class stub for Insert
tests + refactoring:
	resolved issues with swap tests
	inconsequential modifications to Problem & problem tests (thought this class caused error; turned out not to be the case)
	refactoring: code formatting of constructors altered a bit (so far, only modified Strategy & Problem)
	bug fixing: explicitly declared and copied fit arrays in Strategy constructors
	successfully tested Insert
	updated TODO list
recap.ods: added standard deviation calculations
updated results & TODO list
extra insertion tests, attempting to track down bug
insert cost calculation fix + extra tests
main.cpp: -r insert is now legal