sandstorm/Plumber — pull request #8 by afoeder (2013-02-15 14:19:26+00:00)
Title:   [BUGFIX] Make PHP 5.4-ready 

Made the package ready for PHP 5.4 with mostly
removing "runtime pass-by references" (`&$this`).

Besides, some code is slightly cleaned up and
errors are thrown if the environment does not
match the prerequisites.