Add security guidance

Author: WebCoder49

SECURITY.md

@@ -0,0 +1,7 @@
+# Reporting Security Vulnerabilities
+If you find a sensitive security vulnerability
+in the code-input.js library, please
+contact the maintainer Oliver Geer at
+[[email protected]](mailto:[email protected]),
+using [this optional PGP encryption key and advice](https://oliver.geer.im#email)
+if you know how to do so.

docs/_index.md

@@ -312,6 +312,6 @@ something like [CodeMirror](https://codemirror.net/),
 
 ## Contribute Bug Reports / Code / Docs {#contributing}
 
-🎉 code-input.js is collaboratively developed by many people, which is what keeps it going strong. By version 2.6.0, many have reported bugs and suggestions, and [9 people (see them on GitHub)](https://github.com/WebCoder49/code-input/graphs/contributors) have contributed code or documentation directly. If you have found a bug, would like to help with the code or documentation, or have additional suggestions, for plugins or core functionality, [please look at GitHub](https://github.com/WebCoder49/code-input/tree/main/CONTRIBUTING.md) or [get in touch via email so I can add it for you](mailto:[email protected])!
+🎉 code-input.js is collaboratively developed by many people, which is what keeps it going strong. By version 2.6.0, many have reported bugs and suggestions, and [9 people (see them on GitHub)](https://github.com/WebCoder49/code-input/graphs/contributors) have contributed code or documentation directly. If you have found a bug, would like to help with the code or documentation, or have additional suggestions, for plugins or core functionality, [please look at GitHub](https://github.com/WebCoder49/code-input/tree/main/CONTRIBUTING.md) or [get in touch via email so I can add it for you](mailto:[email protected]) / [this address for security issues](mailto:[email protected]) ([address owner, encryption and privacy info](https://oliver.geer.im/#email))!
 
 *I'm looking into mirroring code-input.js onto Codeberg as well as GitHub for more flexibility and freedom - if you have ideas for this please get in touch!*