Updated composer to require 5.4.24 vs 5.3.10 for PHP.
Updated .travis.yml to no longer test against 5.3 as minimum version is now 5.4.
Switched AbstractCommonEveApi to use LoggerAwareTrait instead of Interface.
Squashed 'subtree/Pimple/' changes from 90b4710..6a18683

6a18683 minor #141 Reworded headline (WouterJ)
fa90cc5 Reworded headline
175904c bumped version to 2.1.1

git-subtree-dir: subtree/Pimple
git-subtree-split: 6a18683f5f52c7eff442812b48122d21d44fbddb
Merge commit '7dd0a06835a29c6934a65ad114933359b31db440' into 1.1.x-WIP