Exclude test and build files from release archives (patched)

.gitattributes

@@ -0,0 +1,20 @@
+#
+# Documentation:
+# https://git-scm.com/docs/gitattributes
+#
+
+# Exclude build/test files from archive
+/.github          export-ignore
+/tests            export-ignore
+/.editorconfig    export-ignore
+/.gitattributes   export-ignore
+/.gitignore       export-ignore
+
+# Configure diff output for .php and .phar files.
+*.php diff=php
+*.phar -diff
+
+#
+# This file contains rules suggested by the following article:
+# https://php.watch/articles/composer-gitattributes
+#