Update AUTHORS.txt

AUTHORS.txt

@@ -71,6 +71,7 @@ funvit <[email protected]>
 Gabor Pongracz <[email protected]>
 Gareth Hayes <[email protected]>
 Guilherme <[email protected]>
+Guillaume Denis <[email protected]>
 Hanjun Kim <[email protected]>
 Hendrik Hofstadt <[email protected]>
 Henry <[email protected]>
@@ -104,6 +105,8 @@ Kevin Wang <[email protected]>
 Konstantin Chugalinskiy <[email protected]>
 Konstantin Itskov <[email protected]>
 krishna chiatanya <[email protected]>
+Kunal <[email protected]>
+Kunal Singh <[email protected]>
 Kuzmin Vladimir <[email protected]>
 lawl <[email protected]>
 Len <[email protected]>
@@ -168,11 +171,13 @@ Sam Lancia <[email protected]>
 Sean DuBois <[email protected]>
 Sean DuBois <[email protected]>
 Sean DuBois <[email protected]>
+Sean DuBois <[email protected]>
 Sean DuBois <[email protected]>
 Sean DuBois <[email protected]>
 Sean Knight <[email protected]>
 Sebastian Waisbrot <[email protected]>
 Sidney San Martín <[email protected]>
+Simon Cousineau <[email protected]>
 Simon Eisenmann <[email protected]>
 simonacca-fotokite <[email protected]>
 Simone Gotti <[email protected]>