Merge branch 'hotfix-0.3.2'.
Include graphicx without options when creating latex exams. Fixes #75.

The most recent versions of latex in Debian have problems with images
when the graphicx package is included with the dvipdf option.
Update version number to 0.3.3 and Changelog.
Merge branch 'hotfix-0.3.3' into development.
Remove a setup.py file that is obsolete and unnecesary.