upgrade

.gitattributes

@@ -0,0 +1,31 @@
+.github export-ignore
+.gitattributes export-ignore
+.gitignore export-ignore
+.codeclimate.yml export-ignore
+.flintci.yml export-ignore
+.scrutinizer.yml export-ignore
+.styleci.yml export-ignore
+.travis.yml export-ignore
+.yamllint_config export-ignore
+.php_cs.dist export-ignore
+.php_cs export-ignore
+codesize.xml export-ignore
+phpcs.xml export-ignore
+
+/tests export-ignore
+.editorconfig export-ignore
+
+/vendor/ezyang/htmlpurifier/docs export-ignore
+/vendor/ezyang/htmlpurifier/benchmarks export-ignore
+/vendor/ezyang/htmlpurifier/tests export-ignore
+/vendor/ezyang/htmlpurifier/smoketests export-ignore
+/vendor/ezyang/htmlpurifier/package.php export-ignore
+/vendor/ezyang/htmlpurifier/release1-update.php export-ignore
+/vendor/ezyang/htmlpurifier/release2-tag.php export-ignore
+/vendor/ezyang/htmlpurifier/test-settings.sample.php export-ignore
+/vendor/twig/twig/test export-ignore
+/vendor/monolog/monolog/tests/ export-ignore
+/vendor/neutron/temporary-filesystem/tests export-ignore
+/vendor/sabre/vobject/tests export-ignore
+/vendor/twig/twig/test export-ignore
+/vendor/symfony/console/Symfony/Component/Console/Tests export-ignore