Don’t load squirmer into PE by default

src/pe/communication/DynamicMarshalling.h

@@ -32,7 +32,6 @@
 #include "pe/communication/rigidbody/Box.h"
 #include "pe/communication/rigidbody/Capsule.h"
 #include "pe/communication/rigidbody/Sphere.h"
-#include "pe/communication/rigidbody/Squirmer.h"
 #include "pe/communication/rigidbody/Union.h"
 
 #include "core/Abort.h"

tests/pe/Marshalling.cpp

@@ -26,6 +26,7 @@
 #include "pe/rigidbody/Squirmer.h"
 #include "pe/rigidbody/UnionFactory.h"
 #include "pe/rigidbody/Union.h"
+#include "pe/communication/rigidbody/Squirmer.h"
 #include "pe/communication/DynamicMarshalling.h"
 #include "pe/rigidbody/SetBodyTypeIDs.h"
 #include "pe/Materials.h"