Changed:
* Double spacing now skips an entire \baselineskip: i.e. \setstretch{2} instead of \doublespacing from the setspace package.
* Fixed extra space after the Works Cited heading
* Per archaic package-writing convention, all instances of 0pt has been replaced by \z@ .
* Switches default sans serif font to Arial, and monospace font to Courier New
* Adds an alternative font preset based on the TeX Gyre family (the \if switch is yet to be implemented)

Signed-off-by: vulpicastor <lizhousha96@gmail.com>