Merge pull request #161 from gregorybesson/master

Master
Quality control
Quality control
Quality control
Quality control
Scrutinizer Auto-Fixes

This patch was automatically generated as part of the following inspection:
https://scrutinizer-ci.com/g/gregorybesson/PlaygroundGame/inspections/f488932c-1d4a-4daa-af90-86dd29fb69f5

Enabled analysis tools:
 - PHP Analyzer
 - PHP PDepend
 - PHP Similarity Analyzer
 - PHP Change Tracking Analyzer
Merge pull request #162 from gregorybesson/scrutinizer-patch-1

Scrutinizer Auto-Fixes
Merge pull request #163 from gregorybesson/develop

Scrutinizer fixes