Changed run command to use foreman.
Added the test command and tests for happened aggregator.
Switched to chai for assertions.
Fixed the test script.
Built tests for hit aggregator.
Built tests for is aggregator.
Changed test script to allow for specifying individual files or folders.
Built tests for took aggregator.
Fixed worst case senario of took aggregator to be linear with respect to the number of lines. Allows final two tests to run.