Add convenience function for conversion to ipm

Change-Id: I2b9138322558fc1a2da2f9877cefe3d2268d2412
diff --git a/DESCRIPTION b/DESCRIPTION
index c39776f..5e2ddf4 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -31,4 +31,5 @@
     'RKorAPClient.R'
     'KorAPQuery.R'
     'ci.R'
+    'misc.R'
     'reexports.R'