Slugifier fix - extra unit test added for frequently used characters

Merge pull request #9 from Kunstmaan/fix-slugifier

Fix slugifier

Improve the slugifier for special characters

Fix the ordering of stripping and transliteration

This was kind of a silly way to do this. First stripping everything that is not default, and then using iconv transliteration. At that point there would be no special chars left. This explains why i always lose my French éàç characters in the slug :)

Fixes #8

Add the URLNamingStrategy for New Relic

Merge pull request #7 from Kunstmaan/feature/newrelic-namingstrategy

Add the New Relic naming strategy

Fix composer

v2.3.2

Stability

v2.3.1: Merge pull request #6 from roderik/master

Minimal stability stable and allow for Symfony 2.4 and higher