initial

.gitattributes

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+# Path-based git attributes
+# https://www.kernel.org/pub/software/scm/git/docs/gitattributes.html
+
+# Ignore all test and documentation with "export-ignore".
+/.github            export-ignore
+/.gitattributes     export-ignore
+/.gitignore         export-ignore
+/phpunit.xml.dist   export-ignore
+/tests              export-ignore
+/.editorconfig      export-ignore
+/.php_cs.dist       export-ignore
+/psalm.xml          export-ignore
+/psalm.xml.dist     export-ignore
+/testbench.yaml     export-ignore