Normalize repository files

.gitattributes

@@ -4,12 +4,15 @@
 /.github                     export-ignore
 /.gitignore                  export-ignore
 /.php-cs-fixer.dist.php      export-ignore
+/composer.lock               export-ignore
 /docs                        export-ignore
 /phpstan.neon.dist           export-ignore
-/phpstan-snippets.neon.dist  export-ignore
 /phpunit.xml.dist            export-ignore
 /tests                       export-ignore
 
 /docs/**                     linguist-documentation
+/tests/Fixtures/**           -linguist-detectable
 /tests/fixtures/**           -linguist-detectable
+
+/phpstan-snippets.neon.dist  export-ignore
 /tests/fixtures/**           -text

.gitignore

@@ -3,7 +3,7 @@
 /.phpunit.cache/
 /.phpunit.result.cache
 /.php-cs-fixer.cache
-/var/
 /coverage/
 /coverage.xml
-/clover.xml
+
+/var/

README.md

@@ -169,17 +169,19 @@ Before submitting code, run:
 composer qa
 ```
 
-Changes to public behavior should include tests and documentation. Run
-`composer coverage` separately to enforce the 99% line-coverage floor.
+Changes to public behavior should include tests and documentation.
+
+Run `composer coverage` separately to enforce the 99% line-coverage floor.
 
 ## Support
 
-ALTO Markdown is open source. You can support its continued development through
+ALTO Markdown is open source and independently maintained by
+[Simon André](https://smnandre.dev). If it is useful to your work, you can
+support its continued development through
 [GitHub Sponsors](https://github.com/sponsors/smnandre).
 
-Sharing this package with others or
-[starring it on GitHub](https://github.com/altophp/markdown) is also much
-appreciated.
+Sharing the package or
+[starring it on GitHub](https://github.com/altophp/markdown) also helps.
 
 ## License