Centralize ETA logging

Change-Id: If3661c8a9be059325d9cb86ddf4421e05ce72931
diff --git a/NAMESPACE b/NAMESPACE
index 6b69942..5e5e2be 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -111,6 +111,7 @@
 importFrom(magrittr,debug_pipe)
 importFrom(purrr,map)
 importFrom(purrr,pmap)
+importFrom(stats,median)
 importFrom(stats,prop.test)
 importFrom(stringr,str_detect)
 importFrom(stringr,str_match)