FIX for windows

- need brackets around (std::min)
- need ZEQ_API in front of all functions in event.h to access this
functions in zeq_newEvent test
Update event.h

didn't know about this tabs/space thing...now with spaces
Update subscriber.cpp

resolve macro re-definition of min/max in windows with define
Update event.h
Merge pull request #22 from haenel/master

FIX for Windows