Fix for working identities in ppqueue.c
Merge pull request #353 from lhope/ppqueue

Fix for working identities in ppqueue.c
Translated the Python interrupt handler to PHP
Based on rrworker.php from Ian Barber, added interrupt detection using pcntl (the only possible way that I know)
Merge pull request #355 from poison/master

Translated the Python interrupt handler to PHP
fix build script for C examples
Merge pull request #356 from jouve/master

fix build script for C examples
fix typo
Merge pull request #357 from lodagro/errata

fix typo
Minor grammar and punctuation fixes.
Merge pull request #360 from gward/master

Minor grammar and punctuation fixes.
Minor fixes
Rebuilt whole Guide
Rebuilt whole Guide with latest examples
Fixed use of deprecated CZMQ calls
Rebuilt Guide
Updated to use Digest::SHA
Fix incorrect variable name
Merge pull request #361 from kputnam/fix-typo

Fix incorrect variable name (Ch. 2)
Fixed old code usage
Updating code to work with Perl's ZMQ::LibZMQ3 module (up from
ZMQ::LibZMQ2).