changelog for HEROKU_PHP_GRACEFUL_SIGTERM
changelog for HEROKU_PHP_GRACEFUL_SIGTERM

heroku/heroku-buildpack-php,heroku/heroku-buildpack-php,emeth-/heroku-buildpack-php,emeth-/heroku-buildpack-php,emeth-/heroku-buildpack-php,emeth-/heroku-buildpack-php,heroku/heroku-buildpack-php,heroku/heroku-buildpack-php