To address issue #80, refactor most of the code for extracting a zip file attached to a project submission into a superclass that can be reused.
Download GWT projects from the grader's email account.
Forgot to augment the description for the new functionality.
Merge pull request #81 from DavidWhitlock/fetch-gwt-submissions-from-email

Address issue #80 by downloading project submissions from the grade email.