Show that there is nothing to do while updating to 0.9.0.

Mainly a placeholder so we know where to inject the next breaking change :)
Fix typo
Little code cleaning (scrutinizer + php-cs-fixer)
Merge pull request #172 from K-Phoen/code-cleaning

Little code cleaning (scrutinizer + php-cs-fixer)
Update doc and closes #99

[ci skip]
Merge pull request #170 from tarjei/patch-1

Show that there is nothing to do while updating to 0.9.0.
Made the UniqidNamer more respectful towards the original extensions