Update course info to match current year

Lectures/titlepage.tex

@@ -5,7 +5,7 @@
 \newcommand{\season}{Fall} %use to switch between Winter and Fall
 \newcommand{\instructor}{Dr.~Spencer Smith} %use to switch instructor
 \newcommand{\instructSmall}{Dr.~Smith}
-\newcommand{\yr}{2019}
+\newcommand{\yr}{2020}
 \newcommand{\courseCode}{CAS 741, CES 741}
 \newcommand{\courseTitle}{Development of Scientific Computing Software}