Require external php 7 polyfill

src/polyfill.php

@@ -7,9 +7,6 @@ function callMe($allable, ...$args)
 function returnMe($res) {
     return $res;
 }
-if (!class_exists('\Throwable')) {
-    class Throwable extends \Exception {}
-}
 if (!function_exists('is_iterable')) {
     function is_iterable($var) {
         return is_array($var) || $var instanceof Traversable;

tests/makephar.sh

@@ -49,6 +49,8 @@ echo '{
         }
     ]
 }' > composer.json
+composer config platform.php "7.4"
+[ $PHP_MAJOR_VERSION -eq 5 ] && composer require dstuecken/php7ify
 composer clearcache
 composer update
 cp -a $madelinePath/src vendor/danog/madelineproto/