Use PHP 5.3 Namespaces

[mgatto]

I'm considering making the minimum supported PHP version to be 5.3(.3?). I know 5.2 is deprecated and unsupported, but I also know that Phing is 5.2 compatible and there are still many people on 5.2.

Pros

• Maintains compatibility with Phing
• Still lots of users on 5.2

Cons

• Outdated and unsupported PHP version
• Not using Namespaces is a real drag
• Might need to use Pyrus/PEAR2 if using Namespaces?