allow dompdf/dompdf 1.0 version

Author: liborm85

composer.json

@@ -70,7 +70,7 @@
         "friendsofphp/php-cs-fixer": "^2.2",
         "phpmd/phpmd": "2.*",
         "phploc/phploc": "2.* || 3.* || 4.* || 5.* || 6.* || 7.*",
-        "dompdf/dompdf":"0.8.*",
+        "dompdf/dompdf":"0.8.* || 1.0.*",
         "tecnickcom/tcpdf": "6.*",
         "mpdf/mpdf": "5.7.4 || 6.* || 7.* || 8.*",
         "php-coveralls/php-coveralls": "1.1.0 || ^2.0"