Merge pull request #47 from MONROE-PROJECT/kristrev/fix/v.48

increase version number - v.48 NaN as null fix

Author: kristrev

Jenkinsfile

@@ -1,6 +1,6 @@
 import java.text.SimpleDateFormat
 jobName = "metadata-exporter"
-version = "0.1.47"
+version = "0.1.48"
 build_dir = "build"
 buildPackageName = "meta-exporter"