Fix segfault in zbeacon (#596)
Merge pull request #598 from ahhentz/zinterface

Fix segfault in zbeacon (#596)
Fix zbeabon s_get_interface() for when zsys_interface() returns "".
Merge pull request #599 from mrvn/pull-zbeacon_get_interface_fix

Fix zbeabon s_get_interface() for when zsys_interface() returns "".
Merge pull request #597 from hintjens/master

zproxy re-implemented as actor
Added temporary tracing for zbroker
Log messages should only show when verbose