upgraded to CodeNarc v0.18.1
upgraded to CodeNarc v0.19
now also versioning some HOWTO, TODO and REFERENCES documents
rsync scripts now use checksum instead of modification time

- this is to prevent transfer of files just because the local
  modification time is different than the remote one
Merge branch 'master' into development
renamed method to make the compiler happy

The error was:
Groovy:Mixing private and public/protected methods of the same name causes
multimethods to be disabled and is forbidden to avoid surprising behaviour.
Renaming the private methods will solve the problem.