Start major rework
Remove old code not used anymore
Rename "ProjectLink\RuleSet" namespace to "ProjectLink\Rule"
Fix 2 Coding Standard violations
Start testing ProjectLint with itself
Remove unused code
Make "include" and "exclude" arrays optional in Rule class constructor
Add some unit tests
Add more projectlint.yml rules
Improve unit tests
Merge branch 'feature/major-rework' into develop