Renamed interface to node
Stopepd using 'virtual' for zre_publish; reserved keyword on MSVC
Moved UUID code to separate class
* Simpler Windows implementation (needs review and testing)
* Removed system-specific stuff from zre_internal.h
* Added zre_selftest case (needs more classes)
Cleaned up zre_udp code for legibility (please check)
Added selftest to ignore file
Was wrongly checking UDP UUIDs, discovery was broken - fixed
Merge pull request #84 from hintjens/master

Broke discovery with UDP refactor - fixed