…gain by other functions
…-- it does not belong there
…rectory of different test-cases
… finishes line by line -- less memory
…(fixes #9) Given a directory, will call algo-call on each file that is loaded using the loader-fn and bound to x. Output-file is a mandatory filepath to which the results will be written (in table-form). Algo-call must return an <Algo> object (e.g. multi-run-algo or solve-prob). Num-times is the number of times the algo-call will run on each test-case, which will be used for stats.