Use microtype package; this allows us to word wrap less often.

source/std.tex

@@ -25,6 +25,7 @@
 \usepackage{color}        % define colors for strikeouts and underlines
 \usepackage{amsmath}      % additional math symbols
 \usepackage{mathrsfs}     % mathscr font
+\usepackage{microtype}
 \usepackage{multicol}
 \usepackage{xspace}
 \usepackage{fixme}