Merge pull request #149 from hintjens/master

Migrated Zyre to using zproto
Merge pull request #150 from hintjens/master

Added verbose logging, fixed some gcc warnings
Fixing problem with HELLO command (issue #140)
Merge pull request #151 from mvala/master

Fixing problem with HELLO command (issue #140)
Fixed verbose logging
Removed unneeded #includes