- adapted datastorage class to callback-semantics

- there is nothing like an "unless" statement

- adapted semantics to 0.8.x callback-based zlib api

- corrected module name due to change

- removed debug output

- minor fixes

- problem with scoping

- fixed wrong var name

- missing require

- fixed a few minor problems

- added gzip handling

- added switch for gzip/zlib gelf messages

- added packet dumping capability for nonparseable packets

- added more debugging

- corrected wrong variable name