create() provides an std::shared_ptr instead of a ptr.

--- aicp_core/src/utils/icpMonitor.cpp.orig	2019-05-05 17:52:19.000000000 +0200
+++ aicp_core/src/utils/icpMonitor.cpp	2020-01-24 19:24:13.338056526 +0100
@@ -26,7 +26,7 @@
   params["knn"] =  toParam(1); // for Hausdorff distance, we only need the first closest point
   params["epsilon"] =  toParam(0);
 
-  PM::Matcher* matcherHausdorff = PM::get().MatcherRegistrar.create("KDTreeMatcher", params);
+  auto matcherHausdorff = PM::get().MatcherRegistrar.create("KDTreeMatcher", params);
 
   float quantile = 0.60;
   
@@ -102,7 +102,7 @@
   params["knn"] =  toParam(1); // for Hausdorff distance, we only need the first closest point
   params["epsilon"] =  toParam(0);
 
-  PM::Matcher* matcher = PM::get().MatcherRegistrar.create("KDTreeMatcher", params);
+  auto matcher = PM::get().MatcherRegistrar.create("KDTreeMatcher", params);
 
   // from reading to reference
   matcher->init(A);
--- aicp_core/src/registration/pointmatcher_registration.cpp.orig	2019-05-05 17:52:19.000000000 +0200
+++ aicp_core/src/registration/pointmatcher_registration.cpp	2020-01-24 19:24:44.765800055 +0100
@@ -72,7 +72,7 @@
   {
     PM::TransformationParameters init_transform = parseTransformationDeg(params_.pointmatcher.initialTransform, 3);
 
-    PM::Transformation* rigid_transform = PM::get().REG(Transformation).create("RigidTransformation");
+    auto rigid_transform = PM::get().REG(Transformation).create("RigidTransformation");
 
     if (!rigid_transform->checkParameters(init_transform)) {
       cerr << endl