Merge branch 'missing_tests_v3.2.1' into master

package.json

 {
   "name": "@d-ptb/dcc-js",
-  "version": "1.4.0",
+  "version": "1.4.1",
   "license": "EUPL-1.2",
   "author": "Jan Loewe <jan.loewe@ptb.de>",
   "main": "lib/index.js",