If you don't like running codeception via php codecept.phar ... you could install it in system bin dir
sudo wget http://codeception.com/codecept.phar -O /usr/local/bin/codecept
sudo chmod +x /usr/local/bin/codecept
and now run it like this to check
codecept -V
How to install and copy CSS/JS resources via Composer using Composer plugin.
Flysystem - a filesystem abstraction which allows you to swap a local filesystem with a remote one. That could be very useful for assets manipulation system in CMS or something.
libphonenumber for PHP - a library for parsing, formatting, storing and validating international phone numbers.
Geocoding PHP library with a huge set of geocoding services abstraction.
Firefox Nightly (version 29) supports CSS variables. Okay, now give native CSS inheritance and I will be happy :)