v2.24.0

• updated param $url of method redirectUrl() to make it optional when redirecting to home page
  in Peak\Bedrock\Controller\ActionController
• added method setCache() to Peak\Bedrock\View\Header
• added Peak\Common\CollectionFlattener
• deleted deprecated application module in favor of parent/child action controller
• added function isDev() in Peak\Bedrock\helpers.php
• added a second param to detectEnvFile() in Peak\Bedrock\helpers.php for default fallback env, added detection
  of .dev and chosen .prod file as first priority
• removed application view path from Peak\Bedrock\View\Block::__construct()
• added application view path to Peak\Bedrock\View::renderBlock()
• added interfaces Peak\Common\Renderable, Peak\Common\Outputable and Peak\Common\Initializable
• updated class Peak\Bedrock\View\Block to use Peak\Common\Interfaces\Renderable instead of Peak\Bedrock\View\RenderableInterface
• deleted Peak\Bedrock\View\RenderableInterface
• added function getClassPath() in Peak\Common\helpers.php