chore(release): Enable lean releases

.gitattributes

@@ -0,0 +1,16 @@
+# This file was generated by the lean package validator (http://git.io/lean-package-validator).
+
+* text=auto eol=lf
+
+.coveralls.yml export-ignore
+.gitattributes export-ignore
+.github/ export-ignore
+.gitignore export-ignore
+.php-cs-fixer.dist.php export-ignore
+CHANGELOG.md export-ignore
+LICENSE export-ignore
+Makefile export-ignore
+phpstan.neon.dist export-ignore
+phpunit.xml.dist export-ignore
+README.md export-ignore
+tests/ export-ignore