Added PHP 5.6 and HHVM to Travis
Merge pull request #285 from mhujer/travis-hhvm

Added PHP 5.6 and HHVM to Travis
Fix for XML XXE/XEE potential attacks
Added heuristic check for XXE/XEE attacks with PHP-FPM
Merge branch 'security/zf2014-01'

Resolves ZF2014-01 - XXE/XEE vulnerabilities
Security fix for OpenID
Merge branch 'security/zf2014-02'

Resolves ZF2014-02 - Potential security issue in login mechanism of Zend_OpenId consumer
[1.12.4] Release readiness

- Added security announcements to README
- Updated `Zend_Version::VERSION`
Merge branch 'releases/1.12.4'

1.12.4 readiness