bugsnag/bugsnag-php — pull request #70 by tscheepers (2014-12-10 10:39:52+00:00)
Title: Added ext-mbstring as a dependency

In https://github.com/bugsnag/bugsnag-php/blob/master/src/Bugsnag/Error.php#L229 `mbstring` is used. My app just broke because I hadn't installed it. It should probably be a requirement.