--- a/style.sty	Sat Dec 29 10:30:27 2018 +0000
+++ b/style.sty	Tue Feb 12 21:23:00 2019 +0000
@@ -8,6 +8,7 @@
 \usepackage{menukeys}
 \definecolor{darkblue}{rgb}{0,0,0.6}
 \usepackage[colorlinks=true,urlcolor=darkblue,linkcolor=darkblue]{hyperref}
+\usepackage{soul}
 
 %%% for regular expressions and values
 \newcommand{\ZERO}{\mbox{\bf 0}}
@@ -76,4 +77,6 @@
 regular feedback to me: for example
 what were the most interesting, least interesting, or confusing 
 parts in this lecture? Any problems with my Scala code? Please 
-feel free to share any other questions or concerns.} 
+feel free to share any other questions or concerns. Also, all my
+material is \st{crap} imperfect. If you have any suggestions for
+improvement, I am very grateful to hear.}