Kanboard requires at least PHP 5.6 now

vendor/symfony/console/Formatter/OutputFormatterStyleStack.php

@@ -23,16 +23,8 @@ class OutputFormatterStyleStack
      */
     private $styles;
 
-    /**
-     * @var OutputFormatterStyleInterface
-     */
     private $emptyStyle;
 
-    /**
-     * Constructor.
-     *
-     * @param OutputFormatterStyleInterface|null $emptyStyle
-     */
     public function __construct(OutputFormatterStyleInterface $emptyStyle = null)
     {
         $this->emptyStyle = $emptyStyle ?: new OutputFormatterStyle();
@@ -49,8 +41,6 @@ class OutputFormatterStyleStack
 
     /**
      * Pushes a style in the stack.
-     *
-     * @param OutputFormatterStyleInterface $style
      */
     public function push(OutputFormatterStyleInterface $style)
     {
@@ -60,8 +50,6 @@ class OutputFormatterStyleStack
     /**
      * Pops a style from the stack.
      *
-     * @param OutputFormatterStyleInterface|null $style
-     *
      * @return OutputFormatterStyleInterface
      *
      * @throws InvalidArgumentException When style tags incorrectly nested
@@ -102,9 +90,7 @@ class OutputFormatterStyleStack
     }
 
     /**
-     * @param OutputFormatterStyleInterface $emptyStyle
-     *
-     * @return OutputFormatterStyleStack
+     * @return $this
      */
     public function setEmptyStyle(OutputFormatterStyleInterface $emptyStyle)
     {