Add participants

PREPARATIONS.md

@@ -40,21 +40,11 @@ Very preliminary, please update, extend, or comment.
 
 Confirmed:
 
-1. Angga Fuady
-2. Tooba Tabbassidaloii
-3. Soheil Yousefi
-4. Rick de Leeuw
-5. Sake van Pelt
-6. Niels de Water
-7. Dirk Ages
-8. Arjen Langeveld
-9. Thomas Chin-A-Woeng
-
-Confirmed (but only if seats available):
-
-1. Magnus Palmblad
-2. Arzu Tugce Guler
-3. Jonathan Vis
+1. Tom van Bavel
+2. Ekrem Sabir
+3. Haoyu Wu
+4. Nicolas Bastidas
+5. Vincent de Bakker
 
 Cancelled:
 
@@ -63,6 +53,7 @@ Cancelled:
 3. Roel Zinkstok
 4. Saeed Katiraei
 5. Tarek Malas
+6. Roberta Rivoto
 
 
 ## Course materials