issue #5: fixed StringIndexOutOfBoundsException
Merge branch 'bugfix/5'
[doc] update description and version after bugfix issue #5
issue #5: add position attribute to action annotation (prevents warning in the logfile)
Merge branch 'bugfix/6'
[doc] update description and version after bugfix issue #6
[release] prepare 1.3.1
[release] package 1.3.1
[release] prepare for next version 1.4.0-SN