3.4/develop

Fully embraced the composer way of doing things, added requirement of PHP 5.4+, and added some fancy new 5.4 stuff.
@neo22s, I see that. But that's usage statistics.
Some hosts already support higher PHP version. It's usage can be configured via .htaccess. ex:
https://support.hostgator.com/articles/hosting-guide/hardware-software/php-5-5

 Also, by the time 3.4 will be released:

- 5.3 will be officially EOL
- more hosts on older Ubuntu LTS will move to Ubuntu 14.04 LTS (PHP 5.5)