Work in progress: Good bye, Perl Threads!

xs/xsp/typemap.xspt

@@ -196,6 +196,8 @@
 %typemap{Clone<ModelInstancePtrs>}{simple};
 %typemap{AppConfig*};
 %typemap{Ref<AppConfig>}{simple};
+%typemap{BackgroundSlicingProcess*};
+%typemap{Ref<BackgroundSlicingProcess>}{simple};
 %typemap{GLShader*};
 %typemap{Ref<GLShader>}{simple};
 %typemap{GLVolume*};