Merge pull request #15 from gaillard/master

Tiny performance improvement and a new param to getQueryParams()
Add php 5.6 for travis (yay for alpha!).
Merge pull request #17 from nubs/master

Add php 5.6 for travis (yay for alpha!).
Switch to PSR-4.
Merge pull request #18 from nubs/master

Switch to PSR-4.
Fix some incorrect docblock variable names.
Merge pull request #20 from nubs/fix-documentation

Fix some incorrect docblock variable names.
Clean up unit test doc blocks
Force @covers tags
Fix phpdoc for $key params
Add Arrays::getIfSet
Merge pull request #23 from chadicus/arrays

Arrays::getIfSet