Implements #133 point alignment

Further work to be done:

• switch to depth ray cast correspondences
• use normals etc in correspondences

applications/reconstruct/src/main.cpp

@@ -161,6 +161,7 @@ static void run(ftl::Configurable *root) {
 
 	LOG(INFO) << "Shutting down...";
 	ftl::timer::stop();
+	slave.stop();
 	net->shutdown();
 	ftl::pool.stop();
 
@@ -170,8 +171,8 @@ static void run(ftl::Configurable *root) {
 
 	delete align;
 	delete splat;
-	delete virt;
 	delete stream;
+	delete virt;
 	delete net;
 	LOG(INFO) << "Done.";
 }