minor updates in prep

Praful Agrawal · Praful Agrawal · commit 95828904bced · 2019-03-29T17:24:48.000-06:00
diff --git a/ShapeWorks-Prep b/ShapeWorks-Prep
@@ -1 +1 @@
-Subproject commit a95d9bef65433fd9dc0282b303c4a57d9a0e9a52
+Subproject commit aa4f2fa3add4ec8567b347fb2a6fba8b9b2ea025
