0.17.15

Fixes

• Fixed up 7.4+ safety rules. They can always be muted for PHP 8.0+ repositories.
  E.g. for a PHP 8.0 project, set this to allow ?-> and have improved diff output for changes now:

    <rule ref="SlevomatCodingStandard.Functions.RequireTrailingCommaInDeclaration"/>
    <rule ref="SlevomatCodingStandard.Functions.RequireTrailingCommaInClosureUse"/>

    <rule ref="SlevomatCodingStandard.ControlStructures.DisallowNullSafeObjectOperator">
        <severity>0</severity>
    </rule>
    <rule ref="SlevomatCodingStandard.Functions.DisallowTrailingCommaInDeclaration">
        <severity>0</severity>
    </rule>
    <rule ref="SlevomatCodingStandard.Functions.DisallowTrailingCommaInClosureUse">
        <severity>0</severity>
    </rule>