Added Email Loader Classes
Add class
Preparing to read emails

We now have a very basic FileVisitor
Completed EmailLoader() (and its test case) and the majority of EmailEvent methods (haven't started on its test cases).
Added methods to EmailEvent and some of their test cases.
Updated EmailEvents and test cases.
Finished methods in EmailEvent. #YOLO
Completed EmailEvent Class...might add other methods laterif needed.
Merge branch 'emailLoader' into develop
Merge branch 'develop' of https://github.com/DevolvingSpud/timeline-analyzer-review into develop