add florent to creds

intro.tex

@@ -98,7 +98,8 @@ for the fiery polymorph image,
 \subsection*{and to the playtesters} Marri Russell, Ross Oliver, Reiss McGee, David Smith, Michael Dyson, Ryan Trotter, Maggie Anderson, 
 D\'{o}nal Emerson, Christopher Taylor, June Strang, 
 Aleksej, Mihailo, and Proxy;
-also thanks to Ari-Matti Piippo and \href{https://www.twitter.com/AliceICecile}{Alice I. Cecile} for their insightful comments.
+also thanks to Ari-Matti Piippo and \href{https://www.twitter.com/AliceICecile}{Alice I. Cecile} for their insightful comments,
+and Florent Rougon for inspiration on the box-lines code.
 
 \iftoggle{verbose}{%
 	\columnbreak